# This file is part of cloud-init. See LICENSE file for license information.

from cloudinit import net
from cloudinit import distros
from cloudinit.net import cmdline
from cloudinit.net import (
    eni, interface_has_own_mac, natural_sort_key, netplan, network_state,
    renderers, sysconfig)
from cloudinit.sources.helpers import openstack
from cloudinit import temp_utils
from cloudinit import util

from cloudinit.tests.helpers import (
    CiTestCase, FilesystemMockingTestCase, dir2dict, mock, populate_dir)

import base64
import copy
import gzip
import io
import json
import os
import textwrap
import yaml

DHCP_CONTENT_1 = """
DEVICE='eth0'
PROTO='dhcp'
IPV4ADDR='192.168.122.89'
IPV4BROADCAST='192.168.122.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='192.168.122.1'
IPV4DNS0='192.168.122.1'
IPV4DNS1='0.0.0.0'
HOSTNAME='foohost'
DNSDOMAIN=''
NISDOMAIN=''
ROOTSERVER='192.168.122.1'
ROOTPATH=''
filename=''
UPTIME='21'
DHCPLEASETIME='3600'
DOMAINSEARCH='foo.com'
"""

DHCP_EXPECTED_1 = {
    'name': 'eth0',
    'type': 'physical',
    'subnets': [{'broadcast': '192.168.122.255',
                 'control': 'manual',
                 'gateway': '192.168.122.1',
                 'dns_search': ['foo.com'],
                 'type': 'dhcp',
                 'netmask': '255.255.255.0',
                 'dns_nameservers': ['192.168.122.1']}],
}

DHCP6_CONTENT_1 = """
DEVICE6=eno1
HOSTNAME=
DNSDOMAIN=
IPV6PROTO=dhcp6
IPV6ADDR=2001:67c:1562:8010:0:1::
IPV6NETMASK=64
IPV6DNS0=2001:67c:1562:8010::2:1
IPV6DOMAINSEARCH=
HOSTNAME=
DNSDOMAIN=
"""

DHCP6_EXPECTED_1 = {
    'name': 'eno1',
    'type': 'physical',
    'subnets': [{'control': 'manual',
                 'dns_nameservers': ['2001:67c:1562:8010::2:1'],
                 'netmask': '64',
                 'type': 'dhcp6'}]}


STATIC_CONTENT_1 = """
DEVICE='eth1'
PROTO='static'
IPV4ADDR='10.0.0.2'
IPV4BROADCAST='10.0.0.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='10.0.0.1'
IPV4DNS0='10.0.1.1'
IPV4DNS1='0.0.0.0'
HOSTNAME='foohost'
UPTIME='21'
DHCPLEASETIME='3600'
DOMAINSEARCH='foo.com'
"""

STATIC_EXPECTED_1 = {
    'name': 'eth1',
    'type': 'physical',
    'subnets': [{'broadcast': '10.0.0.255', 'control': 'manual',
                 'gateway': '10.0.0.1',
                 'dns_search': ['foo.com'], 'type': 'static',
                 'netmask': '255.255.255.0',
                 'dns_nameservers': ['10.0.1.1'],
                 'address': '10.0.0.2'}],
}

# Examples (and expected outputs for various renderers).
OS_SAMPLES = [
    {
        'in_data': {
            "services": [{"type": "dns", "address": "172.19.0.12"}],
            "networks": [{
                "network_id": "dacd568d-5be6-4786-91fe-750c374b78b4",
                "type": "ipv4", "netmask": "255.255.252.0",
                "link": "tap1a81968a-79",
                "routes": [{
                    "netmask": "0.0.0.0",
                    "network": "0.0.0.0",
                    "gateway": "172.19.3.254",
                }],
                "ip_address": "172.19.1.34", "id": "network0"
            }],
            "links": [
                {
                    "ethernet_mac_address": "fa:16:3e:ed:9a:59",
                    "mtu": None, "type": "bridge", "id":
                    "tap1a81968a-79",
                    "vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"
                },
            ],
        },
        'in_macs': {
            'fa:16:3e:ed:9a:59': 'eth0',
        },
        'out_sysconfig_opensuse': [
            ('etc/sysconfig/network/ifcfg-eth0',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=eth0
GATEWAY=172.19.3.254
HWADDR=fa:16:3e:ed:9a:59
IPADDR=172.19.1.34
NETMASK=255.255.252.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()),
            ('etc/resolv.conf',
             """
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 172.19.0.12
""".lstrip()),
            ('etc/NetworkManager/conf.d/99-cloud-init.conf',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
[main]
dns = none
""".lstrip()),
            ('etc/udev/rules.d/70-persistent-net.rules',
             "".join(['SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ',
                      'ATTR{address}=="fa:16:3e:ed:9a:59", NAME="eth0"\n']))],
        'out_sysconfig_rhel': [
            ('etc/sysconfig/network-scripts/ifcfg-eth0',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=eth0
GATEWAY=172.19.3.254
HWADDR=fa:16:3e:ed:9a:59
IPADDR=172.19.1.34
NETMASK=255.255.252.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()),
            ('etc/resolv.conf',
             """
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 172.19.0.12
""".lstrip()),
            ('etc/NetworkManager/conf.d/99-cloud-init.conf',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
[main]
dns = none
""".lstrip()),
            ('etc/udev/rules.d/70-persistent-net.rules',
             "".join(['SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ',
                      'ATTR{address}=="fa:16:3e:ed:9a:59", NAME="eth0"\n']))]

    },
    {
        'in_data': {
            "services": [{"type": "dns", "address": "172.19.0.12"}],
            "networks": [{
                "network_id": "public-ipv4",
                "type": "ipv4", "netmask": "255.255.252.0",
                "link": "tap1a81968a-79",
                "routes": [{
                    "netmask": "0.0.0.0",
                    "network": "0.0.0.0",
                    "gateway": "172.19.3.254",
                }],
                "ip_address": "172.19.1.34", "id": "network0"
            }, {
                "network_id": "private-ipv4",
                "type": "ipv4", "netmask": "255.255.255.0",
                "link": "tap1a81968a-79",
                "routes": [],
                "ip_address": "10.0.0.10", "id": "network1"
            }],
            "links": [
                {
                    "ethernet_mac_address": "fa:16:3e:ed:9a:59",
                    "mtu": None, "type": "bridge", "id":
                    "tap1a81968a-79",
                    "vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"
                },
            ],
        },
        'in_macs': {
            'fa:16:3e:ed:9a:59': 'eth0',
        },
        'out_sysconfig_opensuse': [
            ('etc/sysconfig/network/ifcfg-eth0',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=eth0
GATEWAY=172.19.3.254
HWADDR=fa:16:3e:ed:9a:59
IPADDR=172.19.1.34
IPADDR1=10.0.0.10
NETMASK=255.255.252.0
NETMASK1=255.255.255.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()),
            ('etc/resolv.conf',
             """
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 172.19.0.12
""".lstrip()),
            ('etc/NetworkManager/conf.d/99-cloud-init.conf',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
[main]
dns = none
""".lstrip()),
            ('etc/udev/rules.d/70-persistent-net.rules',
             "".join(['SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ',
                      'ATTR{address}=="fa:16:3e:ed:9a:59", NAME="eth0"\n']))],
        'out_sysconfig_rhel': [
            ('etc/sysconfig/network-scripts/ifcfg-eth0',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=eth0
GATEWAY=172.19.3.254
HWADDR=fa:16:3e:ed:9a:59
IPADDR=172.19.1.34
IPADDR1=10.0.0.10
NETMASK=255.255.252.0
NETMASK1=255.255.255.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()),
            ('etc/resolv.conf',
             """
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 172.19.0.12
""".lstrip()),
            ('etc/NetworkManager/conf.d/99-cloud-init.conf',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
[main]
dns = none
""".lstrip()),
            ('etc/udev/rules.d/70-persistent-net.rules',
             "".join(['SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ',
                      'ATTR{address}=="fa:16:3e:ed:9a:59", NAME="eth0"\n']))]

    },
    {
        'in_data': {
            "services": [{"type": "dns", "address": "172.19.0.12"}],
            "networks": [{
                "network_id": "public-ipv4",
                "type": "ipv4", "netmask": "255.255.252.0",
                "link": "tap1a81968a-79",
                "routes": [{
                    "netmask": "0.0.0.0",
                    "network": "0.0.0.0",
                    "gateway": "172.19.3.254",
                }],
                "ip_address": "172.19.1.34", "id": "network0"
            }, {
                "network_id": "public-ipv6-a",
                "type": "ipv6", "netmask": "",
                "link": "tap1a81968a-79",
                "routes": [
                    {
                        "gateway": "2001:DB8::1",
                        "netmask": "::",
                        "network": "::"
                    }
                ],
                "ip_address": "2001:DB8::10", "id": "network1"
            }, {
                "network_id": "public-ipv6-b",
                "type": "ipv6", "netmask": "64",
                "link": "tap1a81968a-79",
                "routes": [
                ],
                "ip_address": "2001:DB9::10", "id": "network2"
            }, {
                "network_id": "public-ipv6-c",
                "type": "ipv6", "netmask": "64",
                "link": "tap1a81968a-79",
                "routes": [
                ],
                "ip_address": "2001:DB10::10", "id": "network3"
            }],
            "links": [
                {
                    "ethernet_mac_address": "fa:16:3e:ed:9a:59",
                    "mtu": None, "type": "bridge", "id":
                    "tap1a81968a-79",
                    "vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"
                },
            ],
        },
        'in_macs': {
            'fa:16:3e:ed:9a:59': 'eth0',
        },
        'out_sysconfig_opensuse': [
            ('etc/sysconfig/network/ifcfg-eth0',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=eth0
GATEWAY=172.19.3.254
HWADDR=fa:16:3e:ed:9a:59
IPADDR=172.19.1.34
IPV6ADDR=2001:DB8::10/64
IPV6ADDR_SECONDARIES="2001:DB9::10/64 2001:DB10::10/64"
IPV6INIT=yes
IPV6_DEFAULTGW=2001:DB8::1
NETMASK=255.255.252.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()),
            ('etc/resolv.conf',
             """
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 172.19.0.12
""".lstrip()),
            ('etc/NetworkManager/conf.d/99-cloud-init.conf',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
[main]
dns = none
""".lstrip()),
            ('etc/udev/rules.d/70-persistent-net.rules',
             "".join(['SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ',
                      'ATTR{address}=="fa:16:3e:ed:9a:59", NAME="eth0"\n']))],
        'out_sysconfig_rhel': [
            ('etc/sysconfig/network-scripts/ifcfg-eth0',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=eth0
GATEWAY=172.19.3.254
HWADDR=fa:16:3e:ed:9a:59
IPADDR=172.19.1.34
IPV6ADDR=2001:DB8::10/64
IPV6ADDR_SECONDARIES="2001:DB9::10/64 2001:DB10::10/64"
IPV6INIT=yes
IPV6_DEFAULTGW=2001:DB8::1
NETMASK=255.255.252.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()),
            ('etc/resolv.conf',
             """
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 172.19.0.12
""".lstrip()),
            ('etc/NetworkManager/conf.d/99-cloud-init.conf',
             """
# Created by cloud-init on instance boot automatically, do not edit.
#
[main]
dns = none
""".lstrip()),
            ('etc/udev/rules.d/70-persistent-net.rules',
             "".join(['SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ',
                      'ATTR{address}=="fa:16:3e:ed:9a:59", NAME="eth0"\n']))]
    }
]

EXAMPLE_ENI = """
auto lo
iface lo inet loopback
   dns-nameservers 10.0.0.1
   dns-search foo.com

auto eth0
iface eth0 inet static
        address 1.2.3.12
        netmask 255.255.255.248
        broadcast 1.2.3.15
        gateway 1.2.3.9
        dns-nameservers 69.9.160.191 69.9.191.4
auto eth1
iface eth1 inet static
        address 10.248.2.4
        netmask 255.255.255.248
        broadcast 10.248.2.7
"""

RENDERED_ENI = """
auto lo
iface lo inet loopback
    dns-nameservers 10.0.0.1
    dns-search foo.com

auto eth0
iface eth0 inet static
    address 1.2.3.12/29
    broadcast 1.2.3.15
    dns-nameservers 69.9.160.191 69.9.191.4
    gateway 1.2.3.9

auto eth1
iface eth1 inet static
    address 10.248.2.4/29
    broadcast 10.248.2.7
""".lstrip()

NETWORK_CONFIGS = {
    'small': {
        'expected_eni': textwrap.dedent("""\
            auto lo
            iface lo inet loopback
                dns-nameservers 1.2.3.4 5.6.7.8
                dns-search wark.maas

            iface eth1 inet manual

            auto eth99
            iface eth99 inet dhcp

            # control-alias eth99
            iface eth99 inet static
                address 192.168.21.3/24
                dns-nameservers 8.8.8.8 8.8.4.4
                dns-search barley.maas sach.maas
                post-up route add default gw 65.61.151.37 || true
                pre-down route del default gw 65.61.151.37 || true
        """).rstrip(' '),
        'expected_netplan': textwrap.dedent("""
            network:
                version: 2
                ethernets:
                    eth1:
                        match:
                            macaddress: cf:d6:af:48:e8:80
                        set-name: eth1
                    eth99:
                        addresses:
                        - 192.168.21.3/24
                        dhcp4: true
                        match:
                            macaddress: c0:d6:9f:2c:e8:80
                        nameservers:
                            addresses:
                            - 8.8.8.8
                            - 8.8.4.4
                            search:
                            - barley.maas
                            - sach.maas
                        routes:
                        -   to: 0.0.0.0/0
                            via: 65.61.151.37
                        set-name: eth99
        """).rstrip(' '),
        'expected_sysconfig': {
            'ifcfg-eth1': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=eth1
                HWADDR=cf:d6:af:48:e8:80
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no"""),
            'ifcfg-eth99': textwrap.dedent("""\
                BOOTPROTO=dhcp
                DEFROUTE=yes
                DEVICE=eth99
                DNS1=8.8.8.8
                DNS2=8.8.4.4
                DOMAIN="barley.maas sach.maas"
                GATEWAY=65.61.151.37
                HWADDR=c0:d6:9f:2c:e8:80
                IPADDR=192.168.21.3
                NETMASK=255.255.255.0
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no"""),
        },
        'yaml': textwrap.dedent("""
            version: 1
            config:
                # Physical interfaces.
                - type: physical
                  name: eth99
                  mac_address: "c0:d6:9f:2c:e8:80"
                  subnets:
                      - type: dhcp4
                      - type: static
                        address: 192.168.21.3/24
                        dns_nameservers:
                          - 8.8.8.8
                          - 8.8.4.4
                        dns_search: barley.maas sach.maas
                        routes:
                          - gateway: 65.61.151.37
                            netmask: 0.0.0.0
                            network: 0.0.0.0
                            metric: 2
                - type: physical
                  name: eth1
                  mac_address: "cf:d6:af:48:e8:80"
                - type: nameserver
                  address:
                    - 1.2.3.4
                    - 5.6.7.8
                  search:
                    - wark.maas
        """),
    },
    'v4_and_v6': {
        'expected_eni': textwrap.dedent("""\
            auto lo
            iface lo inet loopback

            auto iface0
            iface iface0 inet dhcp

            # control-alias iface0
            iface iface0 inet6 dhcp
        """).rstrip(' '),
        'expected_netplan': textwrap.dedent("""
            network:
                version: 2
                ethernets:
                    iface0:
                        dhcp4: true
                        dhcp6: true
        """).rstrip(' '),
        'yaml': textwrap.dedent("""\
            version: 1
            config:
              - type: 'physical'
                name: 'iface0'
                subnets:
                - {'type': 'dhcp4'}
                - {'type': 'dhcp6'}
        """).rstrip(' '),
    },
    'v4_and_v6_static': {
        'expected_eni': textwrap.dedent("""\
            auto lo
            iface lo inet loopback

            auto iface0
            iface iface0 inet static
                address 192.168.14.2/24
                mtu 9000

            # control-alias iface0
            iface iface0 inet6 static
                address 2001:1::1/64
                mtu 1500
        """).rstrip(' '),
        'expected_netplan': textwrap.dedent("""
            network:
                version: 2
                ethernets:
                    iface0:
                        addresses:
                        - 192.168.14.2/24
                        - 2001:1::1/64
                        mtu: 9000
                        mtu6: 1500
        """).rstrip(' '),
        'yaml': textwrap.dedent("""\
            version: 1
            config:
              - type: 'physical'
                name: 'iface0'
                mtu: 8999
                subnets:
                  - type: static
                    address: 192.168.14.2/24
                    mtu: 9000
                  - type: static
                    address: 2001:1::1/64
                    mtu: 1500
        """).rstrip(' '),
        'expected_sysconfig': {
            'ifcfg-iface0': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=iface0
                IPADDR=192.168.14.2
                IPV6ADDR=2001:1::1/64
                IPV6INIT=yes
                NETMASK=255.255.255.0
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no
                MTU=9000
                IPV6_MTU=1500
                """),
        },
    },
    'dhcpv6_only': {
        'expected_eni': textwrap.dedent("""\
            auto lo
            iface lo inet loopback

            auto iface0
            iface iface0 inet6 dhcp
        """).rstrip(' '),
        'expected_netplan': textwrap.dedent("""
            network:
                version: 2
                ethernets:
                    iface0:
                        dhcp6: true
        """).rstrip(' '),
        'yaml': textwrap.dedent("""\
            version: 1
            config:
              - type: 'physical'
                name: 'iface0'
                subnets:
                - {'type': 'dhcp6'}
        """).rstrip(' '),
        'expected_sysconfig': {
            'ifcfg-iface0': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=iface0
                DHCPV6C=yes
                IPV6INIT=yes
                DEVICE=iface0
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no
                """),
        },
    },
    'all': {
        'expected_eni': ("""\
auto lo
iface lo inet loopback
    dns-nameservers 8.8.8.8 4.4.4.4 8.8.4.4
    dns-search barley.maas wark.maas foobar.maas

iface eth0 inet manual

auto eth1
iface eth1 inet manual
    bond-master bond0
    bond-mode active-backup
    bond-xmit-hash-policy layer3+4
    bond_miimon 100

auto eth2
iface eth2 inet manual
    bond-master bond0
    bond-mode active-backup
    bond-xmit-hash-policy layer3+4
    bond_miimon 100

iface eth3 inet manual

iface eth4 inet manual

# control-manual eth5
iface eth5 inet dhcp

auto bond0
iface bond0 inet6 dhcp
    bond-mode active-backup
    bond-slaves none
    bond-xmit-hash-policy layer3+4
    bond_miimon 100
    hwaddress aa:bb:cc:dd:ee:ff

auto br0
iface br0 inet static
    address 192.168.14.2/24
    bridge_ageing 250
    bridge_bridgeprio 22
    bridge_fd 1
    bridge_gcint 2
    bridge_hello 1
    bridge_maxage 10
    bridge_pathcost eth3 50
    bridge_pathcost eth4 75
    bridge_portprio eth3 28
    bridge_portprio eth4 14
    bridge_ports eth3 eth4
    bridge_stp off
    bridge_waitport 1 eth3
    bridge_waitport 2 eth4
    hwaddress bb:bb:bb:bb:bb:aa

# control-alias br0
iface br0 inet6 static
    address 2001:1::1/64
    post-up route add -A inet6 default gw 2001:4800:78ff:1b::1 || true
    pre-down route del -A inet6 default gw 2001:4800:78ff:1b::1 || true

auto bond0.200
iface bond0.200 inet dhcp
    vlan-raw-device bond0
    vlan_id 200

auto eth0.101
iface eth0.101 inet static
    address 192.168.0.2/24
    dns-nameservers 192.168.0.10 10.23.23.134
    dns-search barley.maas sacchromyces.maas brettanomyces.maas
    gateway 192.168.0.1
    mtu 1500
    hwaddress aa:bb:cc:dd:ee:11
    vlan-raw-device eth0
    vlan_id 101

# control-alias eth0.101
iface eth0.101 inet static
    address 192.168.2.10/24

post-up route add -net 10.0.0.0 netmask 255.0.0.0 gw 11.0.0.1 metric 3 || true
pre-down route del -net 10.0.0.0 netmask 255.0.0.0 gw 11.0.0.1 metric 3 || true
"""),
        'expected_netplan': textwrap.dedent("""
            network:
                version: 2
                ethernets:
                    eth0:
                        match:
                            macaddress: c0:d6:9f:2c:e8:80
                        set-name: eth0
                    eth1:
                        match:
                            macaddress: aa:d6:9f:2c:e8:80
                        set-name: eth1
                    eth2:
                        match:
                            macaddress: c0:bb:9f:2c:e8:80
                        set-name: eth2
                    eth3:
                        match:
                            macaddress: 66:bb:9f:2c:e8:80
                        set-name: eth3
                    eth4:
                        match:
                            macaddress: 98:bb:9f:2c:e8:80
                        set-name: eth4
                    eth5:
                        dhcp4: true
                        match:
                            macaddress: 98:bb:9f:2c:e8:8a
                        set-name: eth5
                bonds:
                    bond0:
                        dhcp6: true
                        interfaces:
                        - eth1
                        - eth2
                        macaddress: aa:bb:cc:dd:ee:ff
                        parameters:
                            mii-monitor-interval: 100
                            mode: active-backup
                            transmit-hash-policy: layer3+4
                bridges:
                    br0:
                        addresses:
                        - 192.168.14.2/24
                        - 2001:1::1/64
                        interfaces:
                        - eth3
                        - eth4
                        macaddress: bb:bb:bb:bb:bb:aa
                        nameservers:
                            addresses:
                            - 8.8.8.8
                            - 4.4.4.4
                            - 8.8.4.4
                            search:
                            - barley.maas
                            - wark.maas
                            - foobar.maas
                        parameters:
                            ageing-time: 250
                            forward-delay: 1
                            hello-time: 1
                            max-age: 10
                            path-cost:
                                eth3: 50
                                eth4: 75
                            port-priority:
                                eth3: 28
                                eth4: 14
                            priority: 22
                            stp: false
                        routes:
                        -   to: ::/0
                            via: 2001:4800:78ff:1b::1
                vlans:
                    bond0.200:
                        dhcp4: true
                        id: 200
                        link: bond0
                    eth0.101:
                        addresses:
                        - 192.168.0.2/24
                        - 192.168.2.10/24
                        gateway4: 192.168.0.1
                        id: 101
                        link: eth0
                        macaddress: aa:bb:cc:dd:ee:11
                        mtu: 1500
                        nameservers:
                            addresses:
                            - 192.168.0.10
                            - 10.23.23.134
                            search:
                            - barley.maas
                            - sacchromyces.maas
                            - brettanomyces.maas
        """).rstrip(' '),
        'expected_sysconfig': {
            'ifcfg-bond0': textwrap.dedent("""\
                BONDING_MASTER=yes
                BONDING_OPTS="mode=active-backup """
                                           """xmit_hash_policy=layer3+4 """
                                           """miimon=100"
                BONDING_SLAVE0=eth1
                BONDING_SLAVE1=eth2
                BOOTPROTO=none
                DEVICE=bond0
                DHCPV6C=yes
                IPV6INIT=yes
                MACADDR=aa:bb:cc:dd:ee:ff
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Bond
                USERCTL=no"""),
            'ifcfg-bond0.200': textwrap.dedent("""\
                BOOTPROTO=dhcp
                DEVICE=bond0.200
                NM_CONTROLLED=no
                ONBOOT=yes
                PHYSDEV=bond0
                TYPE=Ethernet
                USERCTL=no
                VLAN=yes"""),
            'ifcfg-br0': textwrap.dedent("""\
                AGEING=250
                BOOTPROTO=none
                DEFROUTE=yes
                DEVICE=br0
                IPADDR=192.168.14.2
                IPV6ADDR=2001:1::1/64
                IPV6INIT=yes
                IPV6_DEFAULTGW=2001:4800:78ff:1b::1
                MACADDR=bb:bb:bb:bb:bb:aa
                NETMASK=255.255.255.0
                NM_CONTROLLED=no
                ONBOOT=yes
                PRIO=22
                STP=no
                TYPE=Bridge
                USERCTL=no"""),
            'ifcfg-eth0': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=eth0
                HWADDR=c0:d6:9f:2c:e8:80
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no"""),
            'ifcfg-eth0.101': textwrap.dedent("""\
                BOOTPROTO=none
                DEFROUTE=yes
                DEVICE=eth0.101
                DNS1=192.168.0.10
                DNS2=10.23.23.134
                DOMAIN="barley.maas sacchromyces.maas brettanomyces.maas"
                GATEWAY=192.168.0.1
                IPADDR=192.168.0.2
                IPADDR1=192.168.2.10
                MTU=1500
                NETMASK=255.255.255.0
                NETMASK1=255.255.255.0
                NM_CONTROLLED=no
                ONBOOT=yes
                PHYSDEV=eth0
                TYPE=Ethernet
                USERCTL=no
                VLAN=yes"""),
            'ifcfg-eth1': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=eth1
                HWADDR=aa:d6:9f:2c:e8:80
                MASTER=bond0
                NM_CONTROLLED=no
                ONBOOT=yes
                SLAVE=yes
                TYPE=Ethernet
                USERCTL=no"""),
            'ifcfg-eth2': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=eth2
                HWADDR=c0:bb:9f:2c:e8:80
                MASTER=bond0
                NM_CONTROLLED=no
                ONBOOT=yes
                SLAVE=yes
                TYPE=Ethernet
                USERCTL=no"""),
            'ifcfg-eth3': textwrap.dedent("""\
                BOOTPROTO=none
                BRIDGE=br0
                DEVICE=eth3
                HWADDR=66:bb:9f:2c:e8:80
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no"""),
            'ifcfg-eth4': textwrap.dedent("""\
                BOOTPROTO=none
                BRIDGE=br0
                DEVICE=eth4
                HWADDR=98:bb:9f:2c:e8:80
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no"""),
            'ifcfg-eth5': textwrap.dedent("""\
                BOOTPROTO=dhcp
                DEVICE=eth5
                HWADDR=98:bb:9f:2c:e8:8a
                NM_CONTROLLED=no
                ONBOOT=no
                TYPE=Ethernet
                USERCTL=no""")
        },
        'yaml': textwrap.dedent("""
            version: 1
            config:
                # Physical interfaces.
                - type: physical
                  name: eth0
                  mac_address: "c0:d6:9f:2c:e8:80"
                - type: physical
                  name: eth1
                  mac_address: "aa:d6:9f:2c:e8:80"
                - type: physical
                  name: eth2
                  mac_address: "c0:bb:9f:2c:e8:80"
                - type: physical
                  name: eth3
                  mac_address: "66:bb:9f:2c:e8:80"
                - type: physical
                  name: eth4
                  mac_address: "98:bb:9f:2c:e8:80"
                # specify how ifupdown should treat iface
                # control is one of ['auto', 'hotplug', 'manual']
                # with manual meaning ifup/ifdown should not affect the iface
                # useful for things like iscsi root + dhcp
                - type: physical
                  name: eth5
                  mac_address: "98:bb:9f:2c:e8:8a"
                  subnets:
                    - type: dhcp
                      control: manual
                # VLAN interface.
                - type: vlan
                  name: eth0.101
                  vlan_link: eth0
                  vlan_id: 101
                  mac_address: aa:bb:cc:dd:ee:11
                  mtu: 1500
                  subnets:
                    - type: static
                      # When 'mtu' matches device-level mtu, no warnings
                      mtu: 1500
                      address: 192.168.0.2/24
                      gateway: 192.168.0.1
                      dns_nameservers:
                        - 192.168.0.10
                        - 10.23.23.134
                      dns_search:
                        - barley.maas
                        - sacchromyces.maas
                        - brettanomyces.maas
                    - type: static
                      address: 192.168.2.10/24
                # Bond.
                - type: bond
                  name: bond0
                  # if 'mac_address' is omitted, the MAC is taken from
                  # the first slave.
                  mac_address: "aa:bb:cc:dd:ee:ff"
                  bond_interfaces:
                    - eth1
                    - eth2
                  params:
                    bond-mode: active-backup
                    bond_miimon: 100
                    bond-xmit-hash-policy: "layer3+4"
                  subnets:
                    - type: dhcp6
                # A Bond VLAN.
                - type: vlan
                  name: bond0.200
                  vlan_link: bond0
                  vlan_id: 200
                  subnets:
                      - type: dhcp4
                # A bridge.
                - type: bridge
                  name: br0
                  bridge_interfaces:
                      - eth3
                      - eth4
                  ipv4_conf:
                      rp_filter: 1
                      proxy_arp: 0
                      forwarding: 1
                  ipv6_conf:
                      autoconf: 1
                      disable_ipv6: 1
                      use_tempaddr: 1
                      forwarding: 1
                      # basically anything in /proc/sys/net/ipv6/conf/.../
                  mac_address: bb:bb:bb:bb:bb:aa
                  params:
                      bridge_ageing: 250
                      bridge_bridgeprio: 22
                      bridge_fd: 1
                      bridge_gcint: 2
                      bridge_hello: 1
                      bridge_maxage: 10
                      bridge_maxwait: 0
                      bridge_pathcost:
                        - eth3 50
                        - eth4 75
                      bridge_portprio:
                        - eth3 28
                        - eth4 14
                      bridge_stp: 'off'
                      bridge_waitport:
                        - 1 eth3
                        - 2 eth4
                  subnets:
                      - type: static
                        address: 192.168.14.2/24
                      - type: static
                        address: 2001:1::1/64 # default to /64
                        routes:
                          - gateway: 2001:4800:78ff:1b::1
                            netmask: '::'
                            network: '::'
                # A global nameserver.
                - type: nameserver
                  address: 8.8.8.8
                  search: barley.maas
                # global nameservers and search in list form
                - type: nameserver
                  address:
                    - 4.4.4.4
                    - 8.8.4.4
                  search:
                    - wark.maas
                    - foobar.maas
                # A global route.
                - type: route
                  destination: 10.0.0.0/8
                  gateway: 11.0.0.1
                  metric: 3
        """).lstrip(),
    },
    'bond': {
        'yaml': textwrap.dedent("""
            version: 1
            config:
              - type: physical
                name: bond0s0
                mac_address: "aa:bb:cc:dd:e8:00"
              - type: physical
                name: bond0s1
                mac_address: "aa:bb:cc:dd:e8:01"
              - type: bond
                name: bond0
                mac_address: "aa:bb:cc:dd:e8:ff"
                mtu: 9000
                bond_interfaces:
                  - bond0s0
                  - bond0s1
                params:
                  bond-mode: active-backup
                  bond_miimon: 100
                  bond-xmit-hash-policy: "layer3+4"
                subnets:
                  - type: static
                    address: 192.168.0.2/24
                    gateway: 192.168.0.1
                    routes:
                     - gateway: 192.168.0.3
                       netmask: 255.255.255.0
                       network: 10.1.3.0
                  - type: static
                    address: 192.168.1.2/24
                  - type: static
                    address: 2001:1::1/92
            """),
        'expected_netplan': textwrap.dedent("""
         network:
             version: 2
             ethernets:
                 bond0s0:
                     match:
                         macaddress: aa:bb:cc:dd:e8:00
                     set-name: bond0s0
                 bond0s1:
                     match:
                         macaddress: aa:bb:cc:dd:e8:01
                     set-name: bond0s1
             bonds:
                 bond0:
                     addresses:
                     - 192.168.0.2/24
                     - 192.168.1.2/24
                     - 2001:1::1/92
                     gateway4: 192.168.0.1
                     interfaces:
                     - bond0s0
                     - bond0s1
                     macaddress: aa:bb:cc:dd:e8:ff
                     mtu: 9000
                     parameters:
                         mii-monitor-interval: 100
                         mode: active-backup
                         transmit-hash-policy: layer3+4
                     routes:
                     -   to: 10.1.3.0/24
                         via: 192.168.0.3
        """),
        'yaml-v2': textwrap.dedent("""
            version: 2
            ethernets:
              eth0:
                match:
                    driver: "virtio_net"
                    macaddress: "aa:bb:cc:dd:e8:00"
              vf0:
                set-name: vf0
                match:
                    driver: "e1000"
                    macaddress: "aa:bb:cc:dd:e8:01"
            bonds:
              bond0:
                addresses:
                - 192.168.0.2/24
                - 192.168.1.2/24
                - 2001:1::1/92
                gateway4: 192.168.0.1
                interfaces:
                - eth0
                - vf0
                parameters:
                    mii-monitor-interval: 100
                    mode: active-backup
                    primary: vf0
                    transmit-hash-policy: "layer3+4"
                routes:
                -   to: 10.1.3.0/24
                    via: 192.168.0.3
            """),
        'expected_netplan-v2': textwrap.dedent("""
         network:
             bonds:
                 bond0:
                     addresses:
                     - 192.168.0.2/24
                     - 192.168.1.2/24
                     - 2001:1::1/92
                     gateway4: 192.168.0.1
                     interfaces:
                     - eth0
                     - vf0
                     parameters:
                         mii-monitor-interval: 100
                         mode: active-backup
                         primary: vf0
                         transmit-hash-policy: layer3+4
                     routes:
                     -   to: 10.1.3.0/24
                         via: 192.168.0.3
             ethernets:
                 eth0:
                     match:
                         driver: virtio_net
                         macaddress: aa:bb:cc:dd:e8:00
                 vf0:
                     match:
                         driver: e1000
                         macaddress: aa:bb:cc:dd:e8:01
                     set-name: vf0
             version: 2
        """),

        'expected_sysconfig_opensuse': {
            'ifcfg-bond0': textwrap.dedent("""\
        BONDING_MASTER=yes
        BONDING_OPTS="mode=active-backup xmit_hash_policy=layer3+4 miimon=100"
        BONDING_SLAVE0=bond0s0
        BONDING_SLAVE1=bond0s1
        BOOTPROTO=none
        DEFROUTE=yes
        DEVICE=bond0
        GATEWAY=192.168.0.1
        MACADDR=aa:bb:cc:dd:e8:ff
        IPADDR=192.168.0.2
        IPADDR1=192.168.1.2
        IPV6ADDR=2001:1::1/92
        IPV6INIT=yes
        MTU=9000
        NETMASK=255.255.255.0
        NETMASK1=255.255.255.0
        NM_CONTROLLED=no
        ONBOOT=yes
        TYPE=Bond
        USERCTL=no
        """),
            'ifcfg-bond0s0': textwrap.dedent("""\
        BOOTPROTO=none
        DEVICE=bond0s0
        HWADDR=aa:bb:cc:dd:e8:00
        MASTER=bond0
        NM_CONTROLLED=no
        ONBOOT=yes
        SLAVE=yes
        TYPE=Ethernet
        USERCTL=no
        """),
            'ifroute-bond0': textwrap.dedent("""\
        ADDRESS0=10.1.3.0
        GATEWAY0=192.168.0.3
        NETMASK0=255.255.255.0
        """),
            'ifcfg-bond0s1': textwrap.dedent("""\
        BOOTPROTO=none
        DEVICE=bond0s1
        HWADDR=aa:bb:cc:dd:e8:01
        MASTER=bond0
        NM_CONTROLLED=no
        ONBOOT=yes
        SLAVE=yes
        TYPE=Ethernet
        USERCTL=no
        """),
        },

        'expected_sysconfig_rhel': {
            'ifcfg-bond0': textwrap.dedent("""\
        BONDING_MASTER=yes
        BONDING_OPTS="mode=active-backup xmit_hash_policy=layer3+4 miimon=100"
        BONDING_SLAVE0=bond0s0
        BONDING_SLAVE1=bond0s1
        BOOTPROTO=none
        DEFROUTE=yes
        DEVICE=bond0
        GATEWAY=192.168.0.1
        MACADDR=aa:bb:cc:dd:e8:ff
        IPADDR=192.168.0.2
        IPADDR1=192.168.1.2
        IPV6ADDR=2001:1::1/92
        IPV6INIT=yes
        MTU=9000
        NETMASK=255.255.255.0
        NETMASK1=255.255.255.0
        NM_CONTROLLED=no
        ONBOOT=yes
        TYPE=Bond
        USERCTL=no
        """),
            'ifcfg-bond0s0': textwrap.dedent("""\
        BOOTPROTO=none
        DEVICE=bond0s0
        HWADDR=aa:bb:cc:dd:e8:00
        MASTER=bond0
        NM_CONTROLLED=no
        ONBOOT=yes
        SLAVE=yes
        TYPE=Ethernet
        USERCTL=no
        """),
            'route6-bond0': textwrap.dedent("""\
            """),
            'route-bond0': textwrap.dedent("""\
        ADDRESS0=10.1.3.0
        GATEWAY0=192.168.0.3
        NETMASK0=255.255.255.0
        """),
            'ifcfg-bond0s1': textwrap.dedent("""\
        BOOTPROTO=none
        DEVICE=bond0s1
        HWADDR=aa:bb:cc:dd:e8:01
        MASTER=bond0
        NM_CONTROLLED=no
        ONBOOT=yes
        SLAVE=yes
        TYPE=Ethernet
        USERCTL=no
        """),
        },
    },
    'vlan': {
        'yaml': textwrap.dedent("""
            version: 1
            config:
              - type: physical
                name: en0
                mac_address: "aa:bb:cc:dd:e8:00"
              - type: vlan
                mtu: 2222
                name: en0.99
                vlan_link: en0
                vlan_id: 99
                subnets:
                  - type: static
                    address: '192.168.2.2/24'
                  - type: static
                    address: '192.168.1.2/24'
                    gateway: 192.168.1.1
                  - type: static
                    address: 2001:1::bbbb/96
                    routes:
                     - gateway: 2001:1::1
                       netmask: '::'
                       network: '::'
            """),
        'expected_sysconfig': {
            'ifcfg-en0': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=en0
                HWADDR=aa:bb:cc:dd:e8:00
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no"""),
            'ifcfg-en0.99': textwrap.dedent("""\
                BOOTPROTO=none
                DEFROUTE=yes
                DEVICE=en0.99
                GATEWAY=192.168.1.1
                IPADDR=192.168.2.2
                IPADDR1=192.168.1.2
                IPV6ADDR=2001:1::bbbb/96
                IPV6INIT=yes
                IPV6_DEFAULTGW=2001:1::1
                MTU=2222
                NETMASK=255.255.255.0
                NETMASK1=255.255.255.0
                NM_CONTROLLED=no
                ONBOOT=yes
                PHYSDEV=en0
                TYPE=Ethernet
                USERCTL=no
                VLAN=yes"""),
        },
    },
    'bridge': {
        'yaml': textwrap.dedent("""
            version: 1
            config:
              - type: physical
                name: eth0
                mac_address: "52:54:00:12:34:00"
                subnets:
                  - type: static
                    address: 2001:1::100/96
              - type: physical
                name: eth1
                mac_address: "52:54:00:12:34:01"
                subnets:
                  - type: static
                    address: 2001:1::101/96
              - type: bridge
                name: br0
                bridge_interfaces:
                  - eth0
                  - eth1
                params:
                  bridge_stp: 0
                  bridge_bridgeprio: 22
                subnets:
                  - type: static
                    address: 192.168.2.2/24"""),
        'expected_sysconfig': {
            'ifcfg-br0': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=br0
                IPADDR=192.168.2.2
                NETMASK=255.255.255.0
                NM_CONTROLLED=no
                ONBOOT=yes
                PRIO=22
                STP=no
                TYPE=Bridge
                USERCTL=no
                """),
            'ifcfg-eth0': textwrap.dedent("""\
                BOOTPROTO=none
                BRIDGE=br0
                DEVICE=eth0
                HWADDR=52:54:00:12:34:00
                IPV6ADDR=2001:1::100/96
                IPV6INIT=yes
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no
                """),
            'ifcfg-eth1': textwrap.dedent("""\
                BOOTPROTO=none
                BRIDGE=br0
                DEVICE=eth1
                HWADDR=52:54:00:12:34:01
                IPV6ADDR=2001:1::101/96
                IPV6INIT=yes
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no
                """),
        },
    },
    'manual': {
        'yaml': textwrap.dedent("""
            version: 1
            config:
              - type: physical
                name: eth0
                mac_address: "52:54:00:12:34:00"
                subnets:
                  - type: static
                    address: 192.168.1.2/24
                    control: manual
              - type: physical
                name: eth1
                mtu: 1480
                mac_address: "52:54:00:12:34:aa"
                subnets:
                  - type: manual
              - type: physical
                name: eth2
                mac_address: "52:54:00:12:34:ff"
                subnets:
                  - type: manual
                    control: manual
                  """),
        'expected_eni': textwrap.dedent("""\
            auto lo
            iface lo inet loopback

            # control-manual eth0
            iface eth0 inet static
                address 192.168.1.2/24

            auto eth1
            iface eth1 inet manual
                mtu 1480

            # control-manual eth2
            iface eth2 inet manual
            """),
        'expected_netplan': textwrap.dedent("""\

            network:
                version: 2
                ethernets:
                    eth0:
                        addresses:
                        - 192.168.1.2/24
                        match:
                            macaddress: '52:54:00:12:34:00'
                        set-name: eth0
                    eth1:
                        match:
                            macaddress: 52:54:00:12:34:aa
                        mtu: 1480
                        set-name: eth1
                    eth2:
                        match:
                            macaddress: 52:54:00:12:34:ff
                        set-name: eth2
            """),
        'expected_sysconfig': {
            'ifcfg-eth0': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=eth0
                HWADDR=52:54:00:12:34:00
                IPADDR=192.168.1.2
                NETMASK=255.255.255.0
                NM_CONTROLLED=no
                ONBOOT=no
                TYPE=Ethernet
                USERCTL=no
                """),
            'ifcfg-eth1': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=eth1
                HWADDR=52:54:00:12:34:aa
                MTU=1480
                NM_CONTROLLED=no
                ONBOOT=yes
                TYPE=Ethernet
                USERCTL=no
                """),
            'ifcfg-eth2': textwrap.dedent("""\
                BOOTPROTO=none
                DEVICE=eth2
                HWADDR=52:54:00:12:34:ff
                NM_CONTROLLED=no
                ONBOOT=no
                TYPE=Ethernet
                USERCTL=no
                """),
        },
    },
}


CONFIG_V1_EXPLICIT_LOOPBACK = {
    'version': 1,
    'config': [{'name': 'eth0', 'type': 'physical',
               'subnets': [{'control': 'auto', 'type': 'dhcp'}]},
               {'name': 'lo', 'type': 'loopback',
                'subnets': [{'control': 'auto', 'type': 'loopback'}]},
               ]}


CONFIG_V1_SIMPLE_SUBNET = {
    'version': 1,
    'config': [{'mac_address': '52:54:00:12:34:00',
                'name': 'interface0',
                'subnets': [{'address': '10.0.2.15',
                             'gateway': '10.0.2.2',
                             'netmask': '255.255.255.0',
                             'type': 'static'}],
                'type': 'physical'}]}


DEFAULT_DEV_ATTRS = {
    'eth1000': {
        "bridge": False,
        "carrier": False,
        "dormant": False,
        "operstate": "down",
        "address": "07-1C-C6-75-A4-BE",
        "device/driver": None,
        "device/device": None,
        "name_assign_type": "4",
    }
}


def _setup_test(tmp_dir, mock_get_devicelist, mock_read_sys_net,
                mock_sys_dev_path, dev_attrs=None):
    if not dev_attrs:
        dev_attrs = DEFAULT_DEV_ATTRS

    mock_get_devicelist.return_value = dev_attrs.keys()

    def fake_read(devname, path, translate=None,
                  on_enoent=None, on_keyerror=None,
                  on_einval=None):
        return dev_attrs[devname][path]

    mock_read_sys_net.side_effect = fake_read

    def sys_dev_path(devname, path=""):
        return tmp_dir + "/" + devname + "/" + path

    for dev in dev_attrs:
        os.makedirs(os.path.join(tmp_dir, dev))
        with open(os.path.join(tmp_dir, dev, 'operstate'), 'w') as fh:
            fh.write(dev_attrs[dev]['operstate'])
        os.makedirs(os.path.join(tmp_dir, dev, "device"))
        for key in ['device/driver']:
            if key in dev_attrs[dev] and dev_attrs[dev][key]:
                target = dev_attrs[dev][key]
                link = os.path.join(tmp_dir, dev, key)
                print('symlink %s -> %s' % (link, target))
                os.symlink(target, link)

    mock_sys_dev_path.side_effect = sys_dev_path


class TestGenerateFallbackConfig(CiTestCase):

    def setUp(self):
        super(TestGenerateFallbackConfig, self).setUp()
        self.add_patch(
            "cloudinit.util.get_cmdline", "m_get_cmdline",
            return_value="root=/dev/sda1")

    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_device_driver(self, mock_get_devicelist, mock_read_sys_net,
                           mock_sys_dev_path):
        devices = {
            'eth0': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'hv_netsvc', 'device/device': '0x3',
                'name_assign_type': '4'},
            'eth1': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'mlx4_core', 'device/device': '0x7',
                'name_assign_type': '4'},

        }

        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path,
                    dev_attrs=devices)

        network_cfg = net.generate_fallback_config(config_driver=True)
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        # don't set rulepath so eni writes them
        renderer = eni.Renderer(
            {'eni_path': 'interfaces', 'netrules_path': 'netrules'})
        renderer.render_network_state(ns, target=render_dir)

        self.assertTrue(os.path.exists(os.path.join(render_dir,
                                                    'interfaces')))
        with open(os.path.join(render_dir, 'interfaces')) as fh:
            contents = fh.read()
        print(contents)
        expected = """
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp
"""
        self.assertEqual(expected.lstrip(), contents.lstrip())

        self.assertTrue(os.path.exists(os.path.join(render_dir, 'netrules')))
        with open(os.path.join(render_dir, 'netrules')) as fh:
            contents = fh.read()
        print(contents)
        expected_rule = [
            'SUBSYSTEM=="net"',
            'ACTION=="add"',
            'DRIVERS=="hv_netsvc"',
            'ATTR{address}=="00:11:22:33:44:55"',
            'NAME="eth0"',
        ]
        self.assertEqual(", ".join(expected_rule) + '\n', contents.lstrip())

    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_device_driver_blacklist(self, mock_get_devicelist,
                                     mock_read_sys_net, mock_sys_dev_path):
        devices = {
            'eth1': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'hv_netsvc', 'device/device': '0x3',
                'name_assign_type': '4'},
            'eth0': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'mlx4_core', 'device/device': '0x7',
                'name_assign_type': '4'},
        }

        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path,
                    dev_attrs=devices)

        blacklist = ['mlx4_core']
        network_cfg = net.generate_fallback_config(blacklist_drivers=blacklist,
                                                   config_driver=True)
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        # don't set rulepath so eni writes them
        renderer = eni.Renderer(
            {'eni_path': 'interfaces', 'netrules_path': 'netrules'})
        renderer.render_network_state(ns, target=render_dir)

        self.assertTrue(os.path.exists(os.path.join(render_dir,
                                                    'interfaces')))
        with open(os.path.join(render_dir, 'interfaces')) as fh:
            contents = fh.read()
        print(contents)
        expected = """
auto lo
iface lo inet loopback

auto eth1
iface eth1 inet dhcp
"""
        self.assertEqual(expected.lstrip(), contents.lstrip())

        self.assertTrue(os.path.exists(os.path.join(render_dir, 'netrules')))
        with open(os.path.join(render_dir, 'netrules')) as fh:
            contents = fh.read()
        print(contents)
        expected_rule = [
            'SUBSYSTEM=="net"',
            'ACTION=="add"',
            'DRIVERS=="hv_netsvc"',
            'ATTR{address}=="00:11:22:33:44:55"',
            'NAME="eth1"',
        ]
        self.assertEqual(", ".join(expected_rule) + '\n', contents.lstrip())

    @mock.patch("cloudinit.util.get_cmdline")
    @mock.patch("cloudinit.util.udevadm_settle")
    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_unstable_names(self, mock_get_devicelist, mock_read_sys_net,
                            mock_sys_dev_path, mock_settle, m_get_cmdline):
        """verify that udevadm settle is called when we find unstable names"""
        devices = {
            'eth0': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'hv_netsvc', 'device/device': '0x3',
                'name_assign_type': False},
            'ens4': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'mlx4_core', 'device/device': '0x7',
                'name_assign_type': '4'},

        }

        m_get_cmdline.return_value = ''
        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path,
                    dev_attrs=devices)
        net.generate_fallback_config(config_driver=True)
        self.assertEqual(1, mock_settle.call_count)

    @mock.patch("cloudinit.util.get_cmdline")
    @mock.patch("cloudinit.util.udevadm_settle")
    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_unstable_names_disabled(self, mock_get_devicelist,
                                     mock_read_sys_net, mock_sys_dev_path,
                                     mock_settle, m_get_cmdline):
        """verify udevadm settle not called when cmdline has net.ifnames=0"""
        devices = {
            'eth0': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'hv_netsvc', 'device/device': '0x3',
                'name_assign_type': False},
            'ens4': {
                'bridge': False, 'carrier': False, 'dormant': False,
                'operstate': 'down', 'address': '00:11:22:33:44:55',
                'device/driver': 'mlx4_core', 'device/device': '0x7',
                'name_assign_type': '4'},

        }

        m_get_cmdline.return_value = 'net.ifnames=0'
        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path,
                    dev_attrs=devices)
        net.generate_fallback_config(config_driver=True)
        self.assertEqual(0, mock_settle.call_count)


class TestRhelSysConfigRendering(CiTestCase):

    with_logs = True

    scripts_dir = '/etc/sysconfig/network-scripts'
    header = ('# Created by cloud-init on instance boot automatically, '
              'do not edit.\n#\n')

    expected_name = 'expected_sysconfig'

    def _get_renderer(self):
        distro_cls = distros.fetch('rhel')
        return sysconfig.Renderer(
            config=distro_cls.renderer_configs.get('sysconfig'))

    def _render_and_read(self, network_config=None, state=None, dir=None):
        if dir is None:
            dir = self.tmp_dir()

        if network_config:
            ns = network_state.parse_net_config_data(network_config)
        elif state:
            ns = state
        else:
            raise ValueError("Expected data or state, got neither")

        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=dir)
        return dir2dict(dir)

    def _compare_files_to_expected(self, expected, found):
        orig_maxdiff = self.maxDiff
        expected_d = dict(
            (os.path.join(self.scripts_dir, k), util.load_shell_content(v))
            for k, v in expected.items())

        # only compare the files in scripts_dir
        scripts_found = dict(
            (k, util.load_shell_content(v)) for k, v in found.items()
            if k.startswith(self.scripts_dir))
        try:
            self.maxDiff = None
            self.assertEqual(expected_d, scripts_found)
        finally:
            self.maxDiff = orig_maxdiff

    def _assert_headers(self, found):
        missing = [f for f in found
                   if (f.startswith(self.scripts_dir) and
                       not found[f].startswith(self.header))]
        if missing:
            raise AssertionError("Missing headers in: %s" % missing)

    @mock.patch("cloudinit.net.util.get_cmdline", return_value="root=myroot")
    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_default_generation(self, mock_get_devicelist,
                                mock_read_sys_net,
                                mock_sys_dev_path, m_get_cmdline):
        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path)

        network_cfg = net.generate_fallback_config()
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=render_dir)

        render_file = 'etc/sysconfig/network-scripts/ifcfg-eth1000'
        with open(os.path.join(render_dir, render_file)) as fh:
            content = fh.read()
            expected_content = """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEVICE=eth1000
HWADDR=07-1C-C6-75-A4-BE
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()
            self.assertEqual(expected_content, content)

    def test_multiple_ipv4_default_gateways(self):
        """ValueError is raised when duplicate ipv4 gateways exist."""
        net_json = {
            "services": [{"type": "dns", "address": "172.19.0.12"}],
            "networks": [{
                "network_id": "dacd568d-5be6-4786-91fe-750c374b78b4",
                "type": "ipv4", "netmask": "255.255.252.0",
                "link": "tap1a81968a-79",
                "routes": [{
                    "netmask": "0.0.0.0",
                    "network": "0.0.0.0",
                    "gateway": "172.19.3.254",
                }, {
                    "netmask": "0.0.0.0",  # A second default gateway
                    "network": "0.0.0.0",
                    "gateway": "172.20.3.254",
                }],
                "ip_address": "172.19.1.34", "id": "network0"
            }],
            "links": [
                {
                    "ethernet_mac_address": "fa:16:3e:ed:9a:59",
                    "mtu": None, "type": "bridge", "id":
                    "tap1a81968a-79",
                    "vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"
                },
            ],
        }
        macs = {'fa:16:3e:ed:9a:59': 'eth0'}
        render_dir = self.tmp_dir()
        network_cfg = openstack.convert_net_json(net_json, known_macs=macs)
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)
        renderer = self._get_renderer()
        with self.assertRaises(ValueError):
            renderer.render_network_state(ns, target=render_dir)
        self.assertEqual([], os.listdir(render_dir))

    def test_multiple_ipv6_default_gateways(self):
        """ValueError is raised when duplicate ipv6 gateways exist."""
        net_json = {
            "services": [{"type": "dns", "address": "172.19.0.12"}],
            "networks": [{
                "network_id": "public-ipv6",
                "type": "ipv6", "netmask": "",
                "link": "tap1a81968a-79",
                "routes": [{
                    "gateway": "2001:DB8::1",
                    "netmask": "::",
                    "network": "::"
                }, {
                    "gateway": "2001:DB9::1",
                    "netmask": "::",
                    "network": "::"
                }],
                "ip_address": "2001:DB8::10", "id": "network1"
            }],
            "links": [
                {
                    "ethernet_mac_address": "fa:16:3e:ed:9a:59",
                    "mtu": None, "type": "bridge", "id":
                    "tap1a81968a-79",
                    "vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"
                },
            ],
        }
        macs = {'fa:16:3e:ed:9a:59': 'eth0'}
        render_dir = self.tmp_dir()
        network_cfg = openstack.convert_net_json(net_json, known_macs=macs)
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)
        renderer = self._get_renderer()
        with self.assertRaises(ValueError):
            renderer.render_network_state(ns, target=render_dir)
        self.assertEqual([], os.listdir(render_dir))

    def test_openstack_rendering_samples(self):
        for os_sample in OS_SAMPLES:
            render_dir = self.tmp_dir()
            ex_input = os_sample['in_data']
            ex_mac_addrs = os_sample['in_macs']
            network_cfg = openstack.convert_net_json(
                ex_input, known_macs=ex_mac_addrs)
            ns = network_state.parse_net_config_data(network_cfg,
                                                     skip_broken=False)
            renderer = self._get_renderer()
            # render a multiple times to simulate reboots
            renderer.render_network_state(ns, target=render_dir)
            renderer.render_network_state(ns, target=render_dir)
            renderer.render_network_state(ns, target=render_dir)
            for fn, expected_content in os_sample.get('out_sysconfig_rhel',
                                                      []):
                with open(os.path.join(render_dir, fn)) as fh:
                    self.assertEqual(expected_content, fh.read())

    def test_network_config_v1_samples(self):
        ns = network_state.parse_net_config_data(CONFIG_V1_SIMPLE_SUBNET)
        render_dir = self.tmp_path("render")
        os.makedirs(render_dir)
        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=render_dir)
        found = dir2dict(render_dir)
        nspath = '/etc/sysconfig/network-scripts/'
        self.assertNotIn(nspath + 'ifcfg-lo', found.keys())
        expected = """\
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=interface0
GATEWAY=10.0.2.2
HWADDR=52:54:00:12:34:00
IPADDR=10.0.2.15
NETMASK=255.255.255.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
"""
        self.assertEqual(expected, found[nspath + 'ifcfg-interface0'])

    def test_config_with_explicit_loopback(self):
        ns = network_state.parse_net_config_data(CONFIG_V1_EXPLICIT_LOOPBACK)
        render_dir = self.tmp_path("render")
        os.makedirs(render_dir)
        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=render_dir)
        found = dir2dict(render_dir)
        nspath = '/etc/sysconfig/network-scripts/'
        self.assertNotIn(nspath + 'ifcfg-lo', found.keys())
        expected = """\
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEVICE=eth0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
"""
        self.assertEqual(expected, found[nspath + 'ifcfg-eth0'])

    def test_bond_config(self):
        expected_name = 'expected_sysconfig_rhel'
        entry = NETWORK_CONFIGS['bond']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[expected_name], found)
        self._assert_headers(found)

    def test_vlan_config(self):
        entry = NETWORK_CONFIGS['vlan']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_bridge_config(self):
        entry = NETWORK_CONFIGS['bridge']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_manual_config(self):
        entry = NETWORK_CONFIGS['manual']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_all_config(self):
        entry = NETWORK_CONFIGS['all']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)
        self.assertNotIn(
            'WARNING: Network config: ignoring eth0.101 device-level mtu',
            self.logs.getvalue())

    def test_small_config(self):
        entry = NETWORK_CONFIGS['small']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_v4_and_v6_static_config(self):
        entry = NETWORK_CONFIGS['v4_and_v6_static']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)
        expected_msg = (
            'WARNING: Network config: ignoring iface0 device-level mtu:8999'
            ' because ipv4 subnet-level mtu:9000 provided.')
        self.assertIn(expected_msg, self.logs.getvalue())

    def test_dhcpv6_only_config(self):
        entry = NETWORK_CONFIGS['dhcpv6_only']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)


class TestOpenSuseSysConfigRendering(CiTestCase):

    with_logs = True

    scripts_dir = '/etc/sysconfig/network'
    header = ('# Created by cloud-init on instance boot automatically, '
              'do not edit.\n#\n')

    expected_name = 'expected_sysconfig'

    def _get_renderer(self):
        distro_cls = distros.fetch('opensuse')
        return sysconfig.Renderer(
            config=distro_cls.renderer_configs.get('sysconfig'))

    def _render_and_read(self, network_config=None, state=None, dir=None):
        if dir is None:
            dir = self.tmp_dir()

        if network_config:
            ns = network_state.parse_net_config_data(network_config)
        elif state:
            ns = state
        else:
            raise ValueError("Expected data or state, got neither")

        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=dir)
        return dir2dict(dir)

    def _compare_files_to_expected(self, expected, found):
        orig_maxdiff = self.maxDiff
        expected_d = dict(
            (os.path.join(self.scripts_dir, k), util.load_shell_content(v))
            for k, v in expected.items())

        # only compare the files in scripts_dir
        scripts_found = dict(
            (k, util.load_shell_content(v)) for k, v in found.items()
            if k.startswith(self.scripts_dir))
        try:
            self.maxDiff = None
            self.assertEqual(expected_d, scripts_found)
        finally:
            self.maxDiff = orig_maxdiff

    def _assert_headers(self, found):
        missing = [f for f in found
                   if (f.startswith(self.scripts_dir) and
                       not found[f].startswith(self.header))]
        if missing:
            raise AssertionError("Missing headers in: %s" % missing)

    @mock.patch("cloudinit.net.util.get_cmdline", return_value="root=myroot")
    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_default_generation(self, mock_get_devicelist,
                                mock_read_sys_net,
                                mock_sys_dev_path, m_get_cmdline):
        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path)

        network_cfg = net.generate_fallback_config()
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=render_dir)

        render_file = 'etc/sysconfig/network/ifcfg-eth1000'
        with open(os.path.join(render_dir, render_file)) as fh:
            content = fh.read()
            expected_content = """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEVICE=eth1000
HWADDR=07-1C-C6-75-A4-BE
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()
            self.assertEqual(expected_content, content)

    def test_multiple_ipv4_default_gateways(self):
        """ValueError is raised when duplicate ipv4 gateways exist."""
        net_json = {
            "services": [{"type": "dns", "address": "172.19.0.12"}],
            "networks": [{
                "network_id": "dacd568d-5be6-4786-91fe-750c374b78b4",
                "type": "ipv4", "netmask": "255.255.252.0",
                "link": "tap1a81968a-79",
                "routes": [{
                    "netmask": "0.0.0.0",
                    "network": "0.0.0.0",
                    "gateway": "172.19.3.254",
                }, {
                    "netmask": "0.0.0.0",  # A second default gateway
                    "network": "0.0.0.0",
                    "gateway": "172.20.3.254",
                }],
                "ip_address": "172.19.1.34", "id": "network0"
            }],
            "links": [
                {
                    "ethernet_mac_address": "fa:16:3e:ed:9a:59",
                    "mtu": None, "type": "bridge", "id":
                    "tap1a81968a-79",
                    "vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"
                },
            ],
        }
        macs = {'fa:16:3e:ed:9a:59': 'eth0'}
        render_dir = self.tmp_dir()
        network_cfg = openstack.convert_net_json(net_json, known_macs=macs)
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)
        renderer = self._get_renderer()
        with self.assertRaises(ValueError):
            renderer.render_network_state(ns, target=render_dir)
        self.assertEqual([], os.listdir(render_dir))

    def test_multiple_ipv6_default_gateways(self):
        """ValueError is raised when duplicate ipv6 gateways exist."""
        net_json = {
            "services": [{"type": "dns", "address": "172.19.0.12"}],
            "networks": [{
                "network_id": "public-ipv6",
                "type": "ipv6", "netmask": "",
                "link": "tap1a81968a-79",
                "routes": [{
                    "gateway": "2001:DB8::1",
                    "netmask": "::",
                    "network": "::"
                }, {
                    "gateway": "2001:DB9::1",
                    "netmask": "::",
                    "network": "::"
                }],
                "ip_address": "2001:DB8::10", "id": "network1"
            }],
            "links": [
                {
                    "ethernet_mac_address": "fa:16:3e:ed:9a:59",
                    "mtu": None, "type": "bridge", "id":
                    "tap1a81968a-79",
                    "vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"
                },
            ],
        }
        macs = {'fa:16:3e:ed:9a:59': 'eth0'}
        render_dir = self.tmp_dir()
        network_cfg = openstack.convert_net_json(net_json, known_macs=macs)
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)
        renderer = self._get_renderer()
        with self.assertRaises(ValueError):
            renderer.render_network_state(ns, target=render_dir)
        self.assertEqual([], os.listdir(render_dir))

    def test_openstack_rendering_samples(self):
        for os_sample in OS_SAMPLES:
            render_dir = self.tmp_dir()
            ex_input = os_sample['in_data']
            ex_mac_addrs = os_sample['in_macs']
            network_cfg = openstack.convert_net_json(
                ex_input, known_macs=ex_mac_addrs)
            ns = network_state.parse_net_config_data(network_cfg,
                                                     skip_broken=False)
            renderer = self._get_renderer()
            # render a multiple times to simulate reboots
            renderer.render_network_state(ns, target=render_dir)
            renderer.render_network_state(ns, target=render_dir)
            renderer.render_network_state(ns, target=render_dir)
            for fn, expected_content in os_sample.get('out_sysconfig_opensuse',
                                                      []):
                with open(os.path.join(render_dir, fn)) as fh:
                    self.assertEqual(expected_content, fh.read())

    def test_network_config_v1_samples(self):
        ns = network_state.parse_net_config_data(CONFIG_V1_SIMPLE_SUBNET)
        render_dir = self.tmp_path("render")
        os.makedirs(render_dir)
        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=render_dir)
        found = dir2dict(render_dir)
        nspath = '/etc/sysconfig/network/'
        self.assertNotIn(nspath + 'ifcfg-lo', found.keys())
        expected = """\
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=none
DEFROUTE=yes
DEVICE=interface0
GATEWAY=10.0.2.2
HWADDR=52:54:00:12:34:00
IPADDR=10.0.2.15
NETMASK=255.255.255.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
"""
        self.assertEqual(expected, found[nspath + 'ifcfg-interface0'])

    def test_config_with_explicit_loopback(self):
        ns = network_state.parse_net_config_data(CONFIG_V1_EXPLICIT_LOOPBACK)
        render_dir = self.tmp_path("render")
        os.makedirs(render_dir)
        renderer = self._get_renderer()
        renderer.render_network_state(ns, target=render_dir)
        found = dir2dict(render_dir)
        nspath = '/etc/sysconfig/network/'
        self.assertNotIn(nspath + 'ifcfg-lo', found.keys())
        expected = """\
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEVICE=eth0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
"""
        self.assertEqual(expected, found[nspath + 'ifcfg-eth0'])

    def test_bond_config(self):
        expected_name = 'expected_sysconfig_opensuse'
        entry = NETWORK_CONFIGS['bond']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        for fname, contents in entry[expected_name].items():
            print(fname)
            print(contents)
            print()
        print('-- expected ^ | v rendered --')
        for fname, contents in found.items():
            print(fname)
            print(contents)
            print()
        self._compare_files_to_expected(entry[expected_name], found)
        self._assert_headers(found)

    def test_vlan_config(self):
        entry = NETWORK_CONFIGS['vlan']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_bridge_config(self):
        entry = NETWORK_CONFIGS['bridge']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_manual_config(self):
        entry = NETWORK_CONFIGS['manual']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_all_config(self):
        entry = NETWORK_CONFIGS['all']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)
        self.assertNotIn(
            'WARNING: Network config: ignoring eth0.101 device-level mtu',
            self.logs.getvalue())

    def test_small_config(self):
        entry = NETWORK_CONFIGS['small']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)

    def test_v4_and_v6_static_config(self):
        entry = NETWORK_CONFIGS['v4_and_v6_static']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)
        expected_msg = (
            'WARNING: Network config: ignoring iface0 device-level mtu:8999'
            ' because ipv4 subnet-level mtu:9000 provided.')
        self.assertIn(expected_msg, self.logs.getvalue())

    def test_dhcpv6_only_config(self):
        entry = NETWORK_CONFIGS['dhcpv6_only']
        found = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self._compare_files_to_expected(entry[self.expected_name], found)
        self._assert_headers(found)


class TestEniNetRendering(CiTestCase):

    @mock.patch("cloudinit.net.util.get_cmdline", return_value="root=myroot")
    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_default_generation(self, mock_get_devicelist,
                                mock_read_sys_net,
                                mock_sys_dev_path, m_get_cmdline):
        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path)

        network_cfg = net.generate_fallback_config()
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        renderer = eni.Renderer(
            {'eni_path': 'interfaces', 'netrules_path': None})
        renderer.render_network_state(ns, target=render_dir)

        self.assertTrue(os.path.exists(os.path.join(render_dir,
                                                    'interfaces')))
        with open(os.path.join(render_dir, 'interfaces')) as fh:
            contents = fh.read()

        expected = """
auto lo
iface lo inet loopback

auto eth1000
iface eth1000 inet dhcp
"""
        self.assertEqual(expected.lstrip(), contents.lstrip())

    def test_config_with_explicit_loopback(self):
        tmp_dir = self.tmp_dir()
        ns = network_state.parse_net_config_data(CONFIG_V1_EXPLICIT_LOOPBACK)
        renderer = eni.Renderer()
        renderer.render_network_state(ns, target=tmp_dir)
        expected = """\
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp
"""
        self.assertEqual(
            expected, dir2dict(tmp_dir)['/etc/network/interfaces'])


class TestNetplanNetRendering(CiTestCase):

    @mock.patch("cloudinit.net.util.get_cmdline", return_value="root=myroot")
    @mock.patch("cloudinit.net.netplan._clean_default")
    @mock.patch("cloudinit.net.sys_dev_path")
    @mock.patch("cloudinit.net.read_sys_net")
    @mock.patch("cloudinit.net.get_devicelist")
    def test_default_generation(self, mock_get_devicelist,
                                mock_read_sys_net,
                                mock_sys_dev_path,
                                mock_clean_default, m_get_cmdline):
        tmp_dir = self.tmp_dir()
        _setup_test(tmp_dir, mock_get_devicelist,
                    mock_read_sys_net, mock_sys_dev_path)

        network_cfg = net.generate_fallback_config()
        ns = network_state.parse_net_config_data(network_cfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        render_target = 'netplan.yaml'
        renderer = netplan.Renderer(
            {'netplan_path': render_target, 'postcmds': False})
        renderer.render_network_state(ns, target=render_dir)

        self.assertTrue(os.path.exists(os.path.join(render_dir,
                                                    render_target)))
        with open(os.path.join(render_dir, render_target)) as fh:
            contents = fh.read()
            print(contents)

        expected = """
network:
    version: 2
    ethernets:
        eth1000:
            dhcp4: true
            match:
                macaddress: 07-1c-c6-75-a4-be
            set-name: eth1000
"""
        self.assertEqual(expected.lstrip(), contents.lstrip())
        self.assertEqual(1, mock_clean_default.call_count)


class TestNetplanCleanDefault(CiTestCase):
    snapd_known_path = 'etc/netplan/00-snapd-config.yaml'
    snapd_known_content = textwrap.dedent("""\
        # This is the initial network config.
        # It can be overwritten by cloud-init or console-conf.
        network:
            version: 2
            ethernets:
                all-en:
                    match:
                        name: "en*"
                    dhcp4: true
                all-eth:
                    match:
                        name: "eth*"
                    dhcp4: true
        """)
    stub_known = {
        'run/systemd/network/10-netplan-all-en.network': 'foo-en',
        'run/systemd/network/10-netplan-all-eth.network': 'foo-eth',
        'run/systemd/generator/netplan.stamp': 'stamp',
    }

    def test_clean_known_config_cleaned(self):
        content = {self.snapd_known_path: self.snapd_known_content, }
        content.update(self.stub_known)
        tmpd = self.tmp_dir()
        files = sorted(populate_dir(tmpd, content))
        netplan._clean_default(target=tmpd)
        found = [t for t in files if os.path.exists(t)]
        self.assertEqual([], found)

    def test_clean_unknown_config_not_cleaned(self):
        content = {self.snapd_known_path: self.snapd_known_content, }
        content.update(self.stub_known)
        content[self.snapd_known_path] += "# user put a comment\n"
        tmpd = self.tmp_dir()
        files = sorted(populate_dir(tmpd, content))
        netplan._clean_default(target=tmpd)
        found = [t for t in files if os.path.exists(t)]
        self.assertEqual(files, found)

    def test_clean_known_config_cleans_only_expected(self):
        astamp = "run/systemd/generator/another.stamp"
        anet = "run/systemd/network/10-netplan-all-lo.network"
        ayaml = "etc/netplan/01-foo-config.yaml"
        content = {
            self.snapd_known_path: self.snapd_known_content,
            astamp: "stamp",
            anet: "network",
            ayaml: "yaml",
        }
        content.update(self.stub_known)

        tmpd = self.tmp_dir()
        files = sorted(populate_dir(tmpd, content))
        netplan._clean_default(target=tmpd)
        found = [t for t in files if os.path.exists(t)]
        expected = [util.target_path(tmpd, f) for f in (astamp, anet, ayaml)]
        self.assertEqual(sorted(expected), found)


class TestNetplanPostcommands(CiTestCase):
    mycfg = {
        'config': [{"type": "physical", "name": "eth0",
                    "mac_address": "c0:d6:9f:2c:e8:80",
                    "subnets": [{"type": "dhcp"}]}],
        'version': 1}

    @mock.patch.object(netplan.Renderer, '_netplan_generate')
    @mock.patch.object(netplan.Renderer, '_net_setup_link')
    def test_netplan_render_calls_postcmds(self, mock_netplan_generate,
                                           mock_net_setup_link):
        tmp_dir = self.tmp_dir()
        ns = network_state.parse_net_config_data(self.mycfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        render_target = 'netplan.yaml'
        renderer = netplan.Renderer(
            {'netplan_path': render_target, 'postcmds': True})
        renderer.render_network_state(ns, target=render_dir)

        mock_netplan_generate.assert_called_with(run=True)
        mock_net_setup_link.assert_called_with(run=True)

    @mock.patch.object(netplan, "get_devicelist")
    @mock.patch('cloudinit.util.subp')
    def test_netplan_postcmds(self, mock_subp, mock_devlist):
        mock_devlist.side_effect = [['lo']]
        tmp_dir = self.tmp_dir()
        ns = network_state.parse_net_config_data(self.mycfg,
                                                 skip_broken=False)

        render_dir = os.path.join(tmp_dir, "render")
        os.makedirs(render_dir)

        render_target = 'netplan.yaml'
        renderer = netplan.Renderer(
            {'netplan_path': render_target, 'postcmds': True})
        expected = [
            mock.call(['netplan', 'generate'], capture=True),
            mock.call(['udevadm', 'test-builtin', 'net_setup_link',
                       '/sys/class/net/lo'], capture=True),
        ]
        with mock.patch.object(os.path, 'islink', return_value=True):
            renderer.render_network_state(ns, target=render_dir)
            mock_subp.assert_has_calls(expected)


class TestEniNetworkStateToEni(CiTestCase):
    mycfg = {
        'config': [{"type": "physical", "name": "eth0",
                    "mac_address": "c0:d6:9f:2c:e8:80",
                    "subnets": [{"type": "dhcp"}]}],
        'version': 1}
    my_mac = 'c0:d6:9f:2c:e8:80'

    def test_no_header(self):
        rendered = eni.network_state_to_eni(
            network_state=network_state.parse_net_config_data(self.mycfg),
            render_hwaddress=True)
        self.assertIn(self.my_mac, rendered)
        self.assertIn("hwaddress", rendered)

    def test_with_header(self):
        header = "# hello world\n"
        rendered = eni.network_state_to_eni(
            network_state=network_state.parse_net_config_data(self.mycfg),
            header=header, render_hwaddress=True)
        self.assertIn(header, rendered)
        self.assertIn(self.my_mac, rendered)

    def test_no_hwaddress(self):
        rendered = eni.network_state_to_eni(
            network_state=network_state.parse_net_config_data(self.mycfg),
            render_hwaddress=False)
        self.assertNotIn(self.my_mac, rendered)
        self.assertNotIn("hwaddress", rendered)


class TestCmdlineConfigParsing(CiTestCase):
    simple_cfg = {
        'config': [{"type": "physical", "name": "eth0",
                    "mac_address": "c0:d6:9f:2c:e8:80",
                    "subnets": [{"type": "dhcp"}]}]}

    def test_cmdline_convert_dhcp(self):
        found = cmdline._klibc_to_config_entry(DHCP_CONTENT_1)
        self.assertEqual(found, ('eth0', DHCP_EXPECTED_1))

    def test_cmdline_convert_dhcp6(self):
        found = cmdline._klibc_to_config_entry(DHCP6_CONTENT_1)
        self.assertEqual(found, ('eno1', DHCP6_EXPECTED_1))

    def test_cmdline_convert_static(self):
        found = cmdline._klibc_to_config_entry(STATIC_CONTENT_1)
        self.assertEqual(found, ('eth1', STATIC_EXPECTED_1))

    def test_config_from_cmdline_net_cfg(self):
        files = []
        pairs = (('net-eth0.cfg', DHCP_CONTENT_1),
                 ('net-eth1.cfg', STATIC_CONTENT_1))

        macs = {'eth1': 'b8:ae:ed:75:ff:2b',
                'eth0': 'b8:ae:ed:75:ff:2a'}

        dhcp = copy.deepcopy(DHCP_EXPECTED_1)
        dhcp['mac_address'] = macs['eth0']

        static = copy.deepcopy(STATIC_EXPECTED_1)
        static['mac_address'] = macs['eth1']

        expected = {'version': 1, 'config': [dhcp, static]}
        with temp_utils.tempdir() as tmpd:
            for fname, content in pairs:
                fp = os.path.join(tmpd, fname)
                files.append(fp)
                util.write_file(fp, content)

            found = cmdline.config_from_klibc_net_cfg(files=files,
                                                      mac_addrs=macs)
            self.assertEqual(found, expected)

    def test_cmdline_with_b64(self):
        data = base64.b64encode(json.dumps(self.simple_cfg).encode())
        encoded_text = data.decode()
        raw_cmdline = 'ro network-config=' + encoded_text + ' root=foo'
        found = cmdline.read_kernel_cmdline_config(cmdline=raw_cmdline)
        self.assertEqual(found, self.simple_cfg)

    def test_cmdline_with_b64_gz(self):
        data = _gzip_data(json.dumps(self.simple_cfg).encode())
        encoded_text = base64.b64encode(data).decode()
        raw_cmdline = 'ro network-config=' + encoded_text + ' root=foo'
        found = cmdline.read_kernel_cmdline_config(cmdline=raw_cmdline)
        self.assertEqual(found, self.simple_cfg)


class TestCmdlineReadKernelConfig(FilesystemMockingTestCase):
    macs = {
        'eth0': '14:02:ec:42:48:00',
        'eno1': '14:02:ec:42:48:01',
    }

    def test_ip_cmdline_without_ip(self):
        content = {'/run/net-eth0.conf': DHCP_CONTENT_1,
                   cmdline._OPEN_ISCSI_INTERFACE_FILE: "eth0\n"}
        exp1 = copy.deepcopy(DHCP_EXPECTED_1)
        exp1['mac_address'] = self.macs['eth0']

        root = self.tmp_dir()
        populate_dir(root, content)
        self.reRoot(root)

        found = cmdline.read_kernel_cmdline_config(
            cmdline='foo root=/root/bar', mac_addrs=self.macs)
        self.assertEqual(found['version'], 1)
        self.assertEqual(found['config'], [exp1])

    def test_ip_cmdline_read_kernel_cmdline_ip(self):
        content = {'/run/net-eth0.conf': DHCP_CONTENT_1}
        exp1 = copy.deepcopy(DHCP_EXPECTED_1)
        exp1['mac_address'] = self.macs['eth0']

        root = self.tmp_dir()
        populate_dir(root, content)
        self.reRoot(root)

        found = cmdline.read_kernel_cmdline_config(
            cmdline='foo ip=dhcp', mac_addrs=self.macs)
        self.assertEqual(found['version'], 1)
        self.assertEqual(found['config'], [exp1])

    def test_ip_cmdline_read_kernel_cmdline_ip6(self):
        content = {'/run/net6-eno1.conf': DHCP6_CONTENT_1}
        root = self.tmp_dir()
        populate_dir(root, content)
        self.reRoot(root)

        found = cmdline.read_kernel_cmdline_config(
            cmdline='foo ip6=dhcp root=/dev/sda',
            mac_addrs=self.macs)
        self.assertEqual(
            found,
            {'version': 1, 'config': [
             {'type': 'physical', 'name': 'eno1',
              'mac_address': self.macs['eno1'],
              'subnets': [
                  {'dns_nameservers': ['2001:67c:1562:8010::2:1'],
                   'control': 'manual', 'type': 'dhcp6', 'netmask': '64'}]}]})

    def test_ip_cmdline_read_kernel_cmdline_none(self):
        # if there is no ip= or ip6= on cmdline, return value should be None
        content = {'net6-eno1.conf': DHCP6_CONTENT_1}
        files = sorted(populate_dir(self.tmp_dir(), content))
        found = cmdline.read_kernel_cmdline_config(
            files=files, cmdline='foo root=/dev/sda', mac_addrs=self.macs)
        self.assertIsNone(found)

    def test_ip_cmdline_both_ip_ip6(self):
        content = {
            '/run/net-eth0.conf': DHCP_CONTENT_1,
            '/run/net6-eth0.conf': DHCP6_CONTENT_1.replace('eno1', 'eth0')}
        eth0 = copy.deepcopy(DHCP_EXPECTED_1)
        eth0['mac_address'] = self.macs['eth0']
        eth0['subnets'].append(
            {'control': 'manual', 'type': 'dhcp6',
             'netmask': '64', 'dns_nameservers': ['2001:67c:1562:8010::2:1']})
        expected = [eth0]

        root = self.tmp_dir()
        populate_dir(root, content)
        self.reRoot(root)

        found = cmdline.read_kernel_cmdline_config(
            cmdline='foo ip=dhcp ip6=dhcp', mac_addrs=self.macs)

        self.assertEqual(found['version'], 1)
        self.assertEqual(found['config'], expected)


class TestNetplanRoundTrip(CiTestCase):
    def _render_and_read(self, network_config=None, state=None,
                         netplan_path=None, target=None):
        if target is None:
            target = self.tmp_dir()

        if network_config:
            ns = network_state.parse_net_config_data(network_config)
        elif state:
            ns = state
        else:
            raise ValueError("Expected data or state, got neither")

        if netplan_path is None:
            netplan_path = 'etc/netplan/50-cloud-init.yaml'

        renderer = netplan.Renderer(
            config={'netplan_path': netplan_path})

        renderer.render_network_state(ns, target=target)
        return dir2dict(target)

    def testsimple_render_bond_netplan(self):
        entry = NETWORK_CONFIGS['bond']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        print(entry['expected_netplan'])
        print('-- expected ^ | v rendered --')
        print(files['/etc/netplan/50-cloud-init.yaml'])
        self.assertEqual(
            entry['expected_netplan'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())

    def testsimple_render_bond_v2_input_netplan(self):
        entry = NETWORK_CONFIGS['bond']
        files = self._render_and_read(
            network_config=yaml.load(entry['yaml-v2']))
        print(entry['expected_netplan-v2'])
        print('-- expected ^ | v rendered --')
        print(files['/etc/netplan/50-cloud-init.yaml'])
        self.assertEqual(
            entry['expected_netplan-v2'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())

    def testsimple_render_small_netplan(self):
        entry = NETWORK_CONFIGS['small']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_netplan'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())

    def testsimple_render_v4_and_v6(self):
        entry = NETWORK_CONFIGS['v4_and_v6']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_netplan'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())

    def testsimple_render_v4_and_v6_static(self):
        entry = NETWORK_CONFIGS['v4_and_v6_static']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_netplan'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())

    def testsimple_render_dhcpv6_only(self):
        entry = NETWORK_CONFIGS['dhcpv6_only']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_netplan'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())

    def testsimple_render_all(self):
        entry = NETWORK_CONFIGS['all']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        print(entry['expected_netplan'])
        print('-- expected ^ | v rendered --')
        print(files['/etc/netplan/50-cloud-init.yaml'])
        self.assertEqual(
            entry['expected_netplan'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())

    def testsimple_render_manual(self):
        entry = NETWORK_CONFIGS['manual']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_netplan'].splitlines(),
            files['/etc/netplan/50-cloud-init.yaml'].splitlines())


class TestEniRoundTrip(CiTestCase):

    def _render_and_read(self, network_config=None, state=None, eni_path=None,
                         netrules_path=None, dir=None):
        if dir is None:
            dir = self.tmp_dir()

        if network_config:
            ns = network_state.parse_net_config_data(network_config)
        elif state:
            ns = state
        else:
            raise ValueError("Expected data or state, got neither")

        if eni_path is None:
            eni_path = 'etc/network/interfaces'

        renderer = eni.Renderer(
            config={'eni_path': eni_path, 'netrules_path': netrules_path})

        renderer.render_network_state(ns, target=dir)
        return dir2dict(dir)

    def testsimple_convert_and_render(self):
        network_config = eni.convert_eni_data(EXAMPLE_ENI)
        files = self._render_and_read(network_config=network_config)
        self.assertEqual(
            RENDERED_ENI.splitlines(),
            files['/etc/network/interfaces'].splitlines())

    def testsimple_render_all(self):
        entry = NETWORK_CONFIGS['all']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_eni'].splitlines(),
            files['/etc/network/interfaces'].splitlines())

    def testsimple_render_small(self):
        entry = NETWORK_CONFIGS['small']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_eni'].splitlines(),
            files['/etc/network/interfaces'].splitlines())

    def testsimple_render_v4_and_v6(self):
        entry = NETWORK_CONFIGS['v4_and_v6']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_eni'].splitlines(),
            files['/etc/network/interfaces'].splitlines())

    def testsimple_render_dhcpv6_only(self):
        entry = NETWORK_CONFIGS['dhcpv6_only']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_eni'].splitlines(),
            files['/etc/network/interfaces'].splitlines())

    def testsimple_render_v4_and_v6_static(self):
        entry = NETWORK_CONFIGS['v4_and_v6_static']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_eni'].splitlines(),
            files['/etc/network/interfaces'].splitlines())

    def testsimple_render_manual(self):
        """Test rendering of 'manual' for 'type' and 'control'.

        'type: manual' in a subnet is odd, but it is the way that was used
        to declare that a network device should get a mtu set on it even
        if there were no addresses to configure.  Also strange is the fact
        that in order to apply that MTU the ifupdown device must be set
        to 'auto', or the MTU would not be set."""
        entry = NETWORK_CONFIGS['manual']
        files = self._render_and_read(network_config=yaml.load(entry['yaml']))
        self.assertEqual(
            entry['expected_eni'].splitlines(),
            files['/etc/network/interfaces'].splitlines())

    def test_routes_rendered(self):
        # as reported in bug 1649652
        conf = [
            {'name': 'eth0', 'type': 'physical',
             'subnets': [{
                 'address': '172.23.31.42/26',
                 'dns_nameservers': [], 'gateway': '172.23.31.2',
                 'type': 'static'}]},
            {'type': 'route', 'id': 4,
             'metric': 0, 'destination': '10.0.0.0/12',
             'gateway': '172.23.31.1'},
            {'type': 'route', 'id': 5,
             'metric': 0, 'destination': '192.168.2.0/16',
             'gateway': '172.23.31.1'},
            {'type': 'route', 'id': 6,
             'metric': 1, 'destination': '10.0.200.0/16',
             'gateway': '172.23.31.1'},
        ]

        files = self._render_and_read(
            network_config={'config': conf, 'version': 1})
        expected = [
            'auto lo',
            'iface lo inet loopback',
            'auto eth0',
            'iface eth0 inet static',
            '    address 172.23.31.42/26',
            '    gateway 172.23.31.2',
            ('post-up route add -net 10.0.0.0 netmask 255.240.0.0 gw '
             '172.23.31.1 metric 0 || true'),
            ('pre-down route del -net 10.0.0.0 netmask 255.240.0.0 gw '
             '172.23.31.1 metric 0 || true'),
            ('post-up route add -net 192.168.2.0 netmask 255.255.0.0 gw '
             '172.23.31.1 metric 0 || true'),
            ('pre-down route del -net 192.168.2.0 netmask 255.255.0.0 gw '
             '172.23.31.1 metric 0 || true'),
            ('post-up route add -net 10.0.200.0 netmask 255.255.0.0 gw '
             '172.23.31.1 metric 1 || true'),
            ('pre-down route del -net 10.0.200.0 netmask 255.255.0.0 gw '
             '172.23.31.1 metric 1 || true'),
        ]
        found = files['/etc/network/interfaces'].splitlines()

        self.assertEqual(
            expected, [line for line in found if line])


class TestNetRenderers(CiTestCase):
    @mock.patch("cloudinit.net.renderers.sysconfig.available")
    @mock.patch("cloudinit.net.renderers.eni.available")
    def test_eni_and_sysconfig_available(self, m_eni_avail, m_sysc_avail):
        m_eni_avail.return_value = True
        m_sysc_avail.return_value = True
        found = renderers.search(priority=['sysconfig', 'eni'], first=False)
        names = [f[0] for f in found]
        self.assertEqual(['sysconfig', 'eni'], names)

    @mock.patch("cloudinit.net.renderers.eni.available")
    def test_search_returns_empty_on_none(self, m_eni_avail):
        m_eni_avail.return_value = False
        found = renderers.search(priority=['eni'], first=False)
        self.assertEqual([], found)

    @mock.patch("cloudinit.net.renderers.sysconfig.available")
    @mock.patch("cloudinit.net.renderers.eni.available")
    def test_first_in_priority(self, m_eni_avail, m_sysc_avail):
        # available should only be called until one is found.
        m_eni_avail.return_value = True
        m_sysc_avail.side_effect = Exception("Should not call me")
        found = renderers.search(priority=['eni', 'sysconfig'], first=True)
        self.assertEqual(['eni'], [found[0]])

    @mock.patch("cloudinit.net.renderers.sysconfig.available")
    @mock.patch("cloudinit.net.renderers.eni.available")
    def test_select_positive(self, m_eni_avail, m_sysc_avail):
        m_eni_avail.return_value = True
        m_sysc_avail.return_value = False
        found = renderers.select(priority=['sysconfig', 'eni'])
        self.assertEqual('eni', found[0])

    @mock.patch("cloudinit.net.renderers.sysconfig.available")
    @mock.patch("cloudinit.net.renderers.eni.available")
    def test_select_none_found_raises(self, m_eni_avail, m_sysc_avail):
        # if select finds nothing, should raise exception.
        m_eni_avail.return_value = False
        m_sysc_avail.return_value = False

        self.assertRaises(net.RendererNotFoundError, renderers.select,
                          priority=['sysconfig', 'eni'])


class TestGetInterfaces(CiTestCase):
    _data = {'bonds': ['bond1'],
             'bridges': ['bridge1'],
             'vlans': ['bond1.101'],
             'own_macs': ['enp0s1', 'enp0s2', 'bridge1-nic', 'bridge1',
                          'bond1.101', 'lo', 'eth1'],
             'macs': {'enp0s1': 'aa:aa:aa:aa:aa:01',
                      'enp0s2': 'aa:aa:aa:aa:aa:02',
                      'bond1': 'aa:aa:aa:aa:aa:01',
                      'bond1.101': 'aa:aa:aa:aa:aa:01',
                      'bridge1': 'aa:aa:aa:aa:aa:03',
                      'bridge1-nic': 'aa:aa:aa:aa:aa:03',
                      'lo': '00:00:00:00:00:00',
                      'greptap0': '00:00:00:00:00:00',
                      'eth1': 'aa:aa:aa:aa:aa:01',
                      'tun0': None},
             'drivers': {'enp0s1': 'virtio_net',
                         'enp0s2': 'e1000',
                         'bond1': None,
                         'bond1.101': None,
                         'bridge1': None,
                         'bridge1-nic': None,
                         'lo': None,
                         'greptap0': None,
                         'eth1': 'mlx4_core',
                         'tun0': None}}
    data = {}

    def _se_get_devicelist(self):
        return list(self.data['devices'])

    def _se_device_driver(self, name):
        return self.data['drivers'][name]

    def _se_device_devid(self, name):
        return '0x%s' % sorted(list(self.data['drivers'].keys())).index(name)

    def _se_get_interface_mac(self, name):
        return self.data['macs'][name]

    def _se_is_bridge(self, name):
        return name in self.data['bridges']

    def _se_is_vlan(self, name):
        return name in self.data['vlans']

    def _se_interface_has_own_mac(self, name):
        return name in self.data['own_macs']

    def _mock_setup(self):
        self.data = copy.deepcopy(self._data)
        self.data['devices'] = set(list(self.data['macs'].keys()))
        mocks = ('get_devicelist', 'get_interface_mac', 'is_bridge',
                 'interface_has_own_mac', 'is_vlan', 'device_driver',
                 'device_devid')
        self.mocks = {}
        for n in mocks:
            m = mock.patch('cloudinit.net.' + n,
                           side_effect=getattr(self, '_se_' + n))
            self.addCleanup(m.stop)
            self.mocks[n] = m.start()

    def test_gi_includes_duplicate_macs(self):
        self._mock_setup()
        ret = net.get_interfaces()

        self.assertIn('enp0s1', self._se_get_devicelist())
        self.assertIn('eth1', self._se_get_devicelist())
        found = [ent for ent in ret if 'aa:aa:aa:aa:aa:01' in ent]
        self.assertEqual(len(found), 2)

    def test_gi_excludes_any_without_mac_address(self):
        self._mock_setup()
        ret = net.get_interfaces()

        self.assertIn('tun0', self._se_get_devicelist())
        found = [ent for ent in ret if 'tun0' in ent]
        self.assertEqual(len(found), 0)

    def test_gi_excludes_stolen_macs(self):
        self._mock_setup()
        ret = net.get_interfaces()
        self.mocks['interface_has_own_mac'].assert_has_calls(
            [mock.call('enp0s1'), mock.call('bond1')], any_order=True)
        expected = [
            ('enp0s2', 'aa:aa:aa:aa:aa:02', 'e1000', '0x5'),
            ('enp0s1', 'aa:aa:aa:aa:aa:01', 'virtio_net', '0x4'),
            ('eth1', 'aa:aa:aa:aa:aa:01', 'mlx4_core', '0x6'),
            ('lo', '00:00:00:00:00:00', None, '0x8'),
            ('bridge1-nic', 'aa:aa:aa:aa:aa:03', None, '0x3'),
        ]
        self.assertEqual(sorted(expected), sorted(ret))

    def test_gi_excludes_bridges(self):
        self._mock_setup()
        # add a device 'b1', make all return they have their "own mac",
        # set everything other than 'b1' to be a bridge.
        # then expect b1 is the only thing left.
        self.data['macs']['b1'] = 'aa:aa:aa:aa:aa:b1'
        self.data['drivers']['b1'] = None
        self.data['devices'].add('b1')
        self.data['bonds'] = []
        self.data['own_macs'] = self.data['devices']
        self.data['bridges'] = [f for f in self.data['devices'] if f != "b1"]
        ret = net.get_interfaces()
        self.assertEqual([('b1', 'aa:aa:aa:aa:aa:b1', None, '0x0')], ret)
        self.mocks['is_bridge'].assert_has_calls(
            [mock.call('bridge1'), mock.call('enp0s1'), mock.call('bond1'),
             mock.call('b1')],
            any_order=True)


class TestInterfaceHasOwnMac(CiTestCase):
    """Test interface_has_own_mac.  This is admittedly a bit whitebox."""

    @mock.patch('cloudinit.net.read_sys_net_int', return_value=None)
    def test_non_strict_with_no_addr_assign_type(self, m_read_sys_net_int):
        """If nic does not have addr_assign_type, it is not "stolen".

        SmartOS containers do not provide the addr_assign_type in /sys.

            $ ( cd /sys/class/net/eth0/ && grep -r . *)
            address:90:b8:d0:20:e1:b0
            addr_len:6
            flags:0x1043
            ifindex:2
            mtu:1500
            tx_queue_len:1
            type:1
        """
        self.assertTrue(interface_has_own_mac("eth0"))

    @mock.patch('cloudinit.net.read_sys_net_int', return_value=None)
    def test_strict_with_no_addr_assign_type_raises(self, m_read_sys_net_int):
        with self.assertRaises(ValueError):
            interface_has_own_mac("eth0", True)

    @mock.patch('cloudinit.net.read_sys_net_int')
    def test_expected_values(self, m_read_sys_net_int):
        msg = "address_assign_type=%d said to not have own mac"
        for address_assign_type in (0, 1, 3):
            m_read_sys_net_int.return_value = address_assign_type
            self.assertTrue(
                interface_has_own_mac("eth0", msg % address_assign_type))

        m_read_sys_net_int.return_value = 2
        self.assertFalse(interface_has_own_mac("eth0"))


class TestGetInterfacesByMac(CiTestCase):
    _data = {'bonds': ['bond1'],
             'bridges': ['bridge1'],
             'vlans': ['bond1.101'],
             'own_macs': ['enp0s1', 'enp0s2', 'bridge1-nic', 'bridge1',
                          'bond1.101', 'lo'],
             'macs': {'enp0s1': 'aa:aa:aa:aa:aa:01',
                      'enp0s2': 'aa:aa:aa:aa:aa:02',
                      'bond1': 'aa:aa:aa:aa:aa:01',
                      'bond1.101': 'aa:aa:aa:aa:aa:01',
                      'bridge1': 'aa:aa:aa:aa:aa:03',
                      'bridge1-nic': 'aa:aa:aa:aa:aa:03',
                      'lo': '00:00:00:00:00:00',
                      'greptap0': '00:00:00:00:00:00',
                      'tun0': None}}
    data = {}

    def _se_get_devicelist(self):
        return list(self.data['devices'])

    def _se_get_interface_mac(self, name):
        return self.data['macs'][name]

    def _se_is_bridge(self, name):
        return name in self.data['bridges']

    def _se_is_vlan(self, name):
        return name in self.data['vlans']

    def _se_interface_has_own_mac(self, name):
        return name in self.data['own_macs']

    def _mock_setup(self):
        self.data = copy.deepcopy(self._data)
        self.data['devices'] = set(list(self.data['macs'].keys()))
        mocks = ('get_devicelist', 'get_interface_mac', 'is_bridge',
                 'interface_has_own_mac', 'is_vlan')
        self.mocks = {}
        for n in mocks:
            m = mock.patch('cloudinit.net.' + n,
                           side_effect=getattr(self, '_se_' + n))
            self.addCleanup(m.stop)
            self.mocks[n] = m.start()

    def test_raise_exception_on_duplicate_macs(self):
        self._mock_setup()
        self.data['macs']['bridge1-nic'] = self.data['macs']['enp0s1']
        self.assertRaises(RuntimeError, net.get_interfaces_by_mac)

    def test_excludes_any_without_mac_address(self):
        self._mock_setup()
        ret = net.get_interfaces_by_mac()
        self.assertIn('tun0', self._se_get_devicelist())
        self.assertNotIn('tun0', ret.values())

    def test_excludes_stolen_macs(self):
        self._mock_setup()
        ret = net.get_interfaces_by_mac()
        self.mocks['interface_has_own_mac'].assert_has_calls(
            [mock.call('enp0s1'), mock.call('bond1')], any_order=True)
        self.assertEqual(
            {'aa:aa:aa:aa:aa:01': 'enp0s1', 'aa:aa:aa:aa:aa:02': 'enp0s2',
             'aa:aa:aa:aa:aa:03': 'bridge1-nic', '00:00:00:00:00:00': 'lo'},
            ret)

    def test_excludes_bridges(self):
        self._mock_setup()
        # add a device 'b1', make all return they have their "own mac",
        # set everything other than 'b1' to be a bridge.
        # then expect b1 is the only thing left.
        self.data['macs']['b1'] = 'aa:aa:aa:aa:aa:b1'
        self.data['devices'].add('b1')
        self.data['bonds'] = []
        self.data['own_macs'] = self.data['devices']
        self.data['bridges'] = [f for f in self.data['devices'] if f != "b1"]
        ret = net.get_interfaces_by_mac()
        self.assertEqual({'aa:aa:aa:aa:aa:b1': 'b1'}, ret)
        self.mocks['is_bridge'].assert_has_calls(
            [mock.call('bridge1'), mock.call('enp0s1'), mock.call('bond1'),
             mock.call('b1')],
            any_order=True)

    def test_excludes_vlans(self):
        self._mock_setup()
        # add a device 'b1', make all return they have their "own mac",
        # set everything other than 'b1' to be a vlan.
        # then expect b1 is the only thing left.
        self.data['macs']['b1'] = 'aa:aa:aa:aa:aa:b1'
        self.data['devices'].add('b1')
        self.data['bonds'] = []
        self.data['bridges'] = []
        self.data['own_macs'] = self.data['devices']
        self.data['vlans'] = [f for f in self.data['devices'] if f != "b1"]
        ret = net.get_interfaces_by_mac()
        self.assertEqual({'aa:aa:aa:aa:aa:b1': 'b1'}, ret)
        self.mocks['is_vlan'].assert_has_calls(
            [mock.call('bridge1'), mock.call('enp0s1'), mock.call('bond1'),
             mock.call('b1')],
            any_order=True)

    def test_duplicates_of_empty_mac_are_ok(self):
        """Duplicate macs of 00:00:00:00:00:00 should be skipped."""
        self._mock_setup()
        empty_mac = "00:00:00:00:00:00"
        addnics = ('greptap1', 'lo', 'greptap2')
        self.data['macs'].update(dict((k, empty_mac) for k in addnics))
        self.data['devices'].update(set(addnics))
        ret = net.get_interfaces_by_mac()
        self.assertEqual('lo', ret[empty_mac])


class TestInterfacesSorting(CiTestCase):

    def test_natural_order(self):
        data = ['ens5', 'ens6', 'ens3', 'ens20', 'ens13', 'ens2']
        self.assertEqual(
            sorted(data, key=natural_sort_key),
            ['ens2', 'ens3', 'ens5', 'ens6', 'ens13', 'ens20'])
        data2 = ['enp2s0', 'enp2s3', 'enp0s3', 'enp0s13', 'enp0s8', 'enp1s2']
        self.assertEqual(
            sorted(data2, key=natural_sort_key),
            ['enp0s3', 'enp0s8', 'enp0s13', 'enp1s2', 'enp2s0', 'enp2s3'])


def _gzip_data(data):
    with io.BytesIO() as iobuf:
        gzfp = gzip.GzipFile(mode="wb", fileobj=iobuf)
        gzfp.write(data)
        gzfp.close()
        return iobuf.getvalue()


class TestRenameInterfaces(CiTestCase):

    @mock.patch('cloudinit.util.subp')
    def test_rename_all(self, mock_subp):
        renames = [
            ('00:11:22:33:44:55', 'interface0', 'virtio_net', '0x3'),
            ('00:11:22:33:44:aa', 'interface2', 'virtio_net', '0x5'),
        ]
        current_info = {
            'ens3': {
                'downable': True,
                'device_id': '0x3',
                'driver': 'virtio_net',
                'mac': '00:11:22:33:44:55',
                'name': 'ens3',
                'up': False},
            'ens5': {
                'downable': True,
                'device_id': '0x5',
                'driver': 'virtio_net',
                'mac': '00:11:22:33:44:aa',
                'name': 'ens5',
                'up': False},
        }
        net._rename_interfaces(renames, current_info=current_info)
        print(mock_subp.call_args_list)
        mock_subp.assert_has_calls([
            mock.call(['ip', 'link', 'set', 'ens3', 'name', 'interface0'],
                      capture=True),
            mock.call(['ip', 'link', 'set', 'ens5', 'name', 'interface2'],
                      capture=True),
        ])

    @mock.patch('cloudinit.util.subp')
    def test_rename_no_driver_no_device_id(self, mock_subp):
        renames = [
            ('00:11:22:33:44:55', 'interface0', None, None),
            ('00:11:22:33:44:aa', 'interface1', None, None),
        ]
        current_info = {
            'eth0': {
                'downable': True,
                'device_id': None,
                'driver': None,
                'mac': '00:11:22:33:44:55',
                'name': 'eth0',
                'up': False},
            'eth1': {
                'downable': True,
                'device_id': None,
                'driver': None,
                'mac': '00:11:22:33:44:aa',
                'name': 'eth1',
                'up': False},
        }
        net._rename_interfaces(renames, current_info=current_info)
        print(mock_subp.call_args_list)
        mock_subp.assert_has_calls([
            mock.call(['ip', 'link', 'set', 'eth0', 'name', 'interface0'],
                      capture=True),
            mock.call(['ip', 'link', 'set', 'eth1', 'name', 'interface1'],
                      capture=True),
        ])

    @mock.patch('cloudinit.util.subp')
    def test_rename_all_bounce(self, mock_subp):
        renames = [
            ('00:11:22:33:44:55', 'interface0', 'virtio_net', '0x3'),
            ('00:11:22:33:44:aa', 'interface2', 'virtio_net', '0x5'),
        ]
        current_info = {
            'ens3': {
                'downable': True,
                'device_id': '0x3',
                'driver': 'virtio_net',
                'mac': '00:11:22:33:44:55',
                'name': 'ens3',
                'up': True},
            'ens5': {
                'downable': True,
                'device_id': '0x5',
                'driver': 'virtio_net',
                'mac': '00:11:22:33:44:aa',
                'name': 'ens5',
                'up': True},
        }
        net._rename_interfaces(renames, current_info=current_info)
        print(mock_subp.call_args_list)
        mock_subp.assert_has_calls([
            mock.call(['ip', 'link', 'set', 'ens3', 'down'], capture=True),
            mock.call(['ip', 'link', 'set', 'ens3', 'name', 'interface0'],
                      capture=True),
            mock.call(['ip', 'link', 'set', 'ens5', 'down'], capture=True),
            mock.call(['ip', 'link', 'set', 'ens5', 'name', 'interface2'],
                      capture=True),
            mock.call(['ip', 'link', 'set', 'interface0', 'up'], capture=True),
            mock.call(['ip', 'link', 'set', 'interface2', 'up'], capture=True)
        ])

    @mock.patch('cloudinit.util.subp')
    def test_rename_duplicate_macs(self, mock_subp):
        renames = [
            ('00:11:22:33:44:55', 'eth0', 'hv_netsvc', '0x3'),
            ('00:11:22:33:44:55', 'vf1', 'mlx4_core', '0x5'),
        ]
        current_info = {
            'eth0': {
                'downable': True,
                'device_id': '0x3',
                'driver': 'hv_netsvc',
                'mac': '00:11:22:33:44:55',
                'name': 'eth0',
                'up': False},
            'eth1': {
                'downable': True,
                'device_id': '0x5',
                'driver': 'mlx4_core',
                'mac': '00:11:22:33:44:55',
                'name': 'eth1',
                'up': False},
        }
        net._rename_interfaces(renames, current_info=current_info)
        print(mock_subp.call_args_list)
        mock_subp.assert_has_calls([
            mock.call(['ip', 'link', 'set', 'eth1', 'name', 'vf1'],
                      capture=True),
        ])

    @mock.patch('cloudinit.util.subp')
    def test_rename_duplicate_macs_driver_no_devid(self, mock_subp):
        renames = [
            ('00:11:22:33:44:55', 'eth0', 'hv_netsvc', None),
            ('00:11:22:33:44:55', 'vf1', 'mlx4_core', None),
        ]
        current_info = {
            'eth0': {
                'downable': True,
                'device_id': '0x3',
                'driver': 'hv_netsvc',
                'mac': '00:11:22:33:44:55',
                'name': 'eth0',
                'up': False},
            'eth1': {
                'downable': True,
                'device_id': '0x5',
                'driver': 'mlx4_core',
                'mac': '00:11:22:33:44:55',
                'name': 'eth1',
                'up': False},
        }
        net._rename_interfaces(renames, current_info=current_info)
        print(mock_subp.call_args_list)
        mock_subp.assert_has_calls([
            mock.call(['ip', 'link', 'set', 'eth1', 'name', 'vf1'],
                      capture=True),
        ])

    @mock.patch('cloudinit.util.subp')
    def test_rename_multi_mac_dups(self, mock_subp):
        renames = [
            ('00:11:22:33:44:55', 'eth0', 'hv_netsvc', '0x3'),
            ('00:11:22:33:44:55', 'vf1', 'mlx4_core', '0x5'),
            ('00:11:22:33:44:55', 'vf2', 'mlx4_core', '0x7'),
        ]
        current_info = {
            'eth0': {
                'downable': True,
                'device_id': '0x3',
                'driver': 'hv_netsvc',
                'mac': '00:11:22:33:44:55',
                'name': 'eth0',
                'up': False},
            'eth1': {
                'downable': True,
                'device_id': '0x5',
                'driver': 'mlx4_core',
                'mac': '00:11:22:33:44:55',
                'name': 'eth1',
                'up': False},
            'eth2': {
                'downable': True,
                'device_id': '0x7',
                'driver': 'mlx4_core',
                'mac': '00:11:22:33:44:55',
                'name': 'eth2',
                'up': False},
        }
        net._rename_interfaces(renames, current_info=current_info)
        print(mock_subp.call_args_list)
        mock_subp.assert_has_calls([
            mock.call(['ip', 'link', 'set', 'eth1', 'name', 'vf1'],
                      capture=True),
            mock.call(['ip', 'link', 'set', 'eth2', 'name', 'vf2'],
                      capture=True),
        ])

    @mock.patch('cloudinit.util.subp')
    def test_rename_macs_case_insensitive(self, mock_subp):
        """_rename_interfaces must support upper or lower case macs."""
        renames = [
            ('aa:aa:aa:aa:aa:aa', 'en0', None, None),
            ('BB:BB:BB:BB:BB:BB', 'en1', None, None),
            ('cc:cc:cc:cc:cc:cc', 'en2', None, None),
            ('DD:DD:DD:DD:DD:DD', 'en3', None, None),
        ]
        current_info = {
            'eth0': {'downable': True, 'mac': 'AA:AA:AA:AA:AA:AA',
                     'name': 'eth0', 'up': False},
            'eth1': {'downable': True, 'mac': 'bb:bb:bb:bb:bb:bb',
                     'name': 'eth1', 'up': False},
            'eth2': {'downable': True, 'mac': 'cc:cc:cc:cc:cc:cc',
                     'name': 'eth2', 'up': False},
            'eth3': {'downable': True, 'mac': 'DD:DD:DD:DD:DD:DD',
                     'name': 'eth3', 'up': False},
        }
        net._rename_interfaces(renames, current_info=current_info)

        expected = [
            mock.call(['ip', 'link', 'set', 'eth%d' % i, 'name', 'en%d' % i],
                      capture=True)
            for i in range(len(renames))]
        mock_subp.assert_has_calls(expected)


class TestNetworkState(CiTestCase):

    def test_bcast_addr(self):
        """Test mask_and_ipv4_to_bcast_addr proper execution."""
        bcast_addr = network_state.mask_and_ipv4_to_bcast_addr
        self.assertEqual("192.168.1.255",
                         bcast_addr("255.255.255.0", "192.168.1.1"))
        self.assertEqual("128.42.7.255",
                         bcast_addr("255.255.248.0", "128.42.5.4"))
        self.assertEqual("10.1.21.255",
                         bcast_addr("255.255.255.0", "10.1.21.4"))

# vi: ts=4 expandtab
