RHEL/CentOS: Fix dual stack IPv4/IPv6 configuration.

Dual stack IPv4/IPv6 configuration via config drive is broken for RHEL7.
This patch fixes several scenarios for IPv4/IPv6/dual-stack with multiple
IP assignment.
Removes usage of unpopular IPv4 alias files and invalid IPv6 alias files.

Also fix associated unit tests.

LP: #1679817
LP: #1685534
LP: #1685532

2 files changed, 25 insertions, 62 deletions

diff --git a/tests/unittests/test_distros/test_netconfig.py b/tests/unittests/test_distros/test_netconfig.py
index 1e10a33d..fd7c051f 100644
--- a/tests/unittests/test_distros/test_netconfig.py
+++ b/tests/unittests/test_distros/test_netconfig.py
@@ -476,7 +476,7 @@ NETWORKING=yes
             expected_buf = '''
 # Created by cloud-init on instance boot automatically, do not edit.
 #
-BOOTPROTO=static
+BOOTPROTO=none
 DEVICE=eth0
 IPADDR=192.168.1.5
 NETMASK=255.255.255.0
@@ -533,7 +533,6 @@ NETWORKING=yes
                 mock.patch.object(util, 'load_file', return_value=''))
             mocks.enter_context(
                 mock.patch.object(os.path, 'isfile', return_value=False))
-
             rh_distro.apply_network(BASE_NET_CFG_IPV6, False)
 
             self.assertEqual(len(write_bufs), 4)
@@ -626,11 +625,10 @@ IPV6_AUTOCONF=no
             expected_buf = '''
 # Created by cloud-init on instance boot automatically, do not edit.
 #
-BOOTPROTO=static
+BOOTPROTO=none
 DEVICE=eth0
-IPV6ADDR=2607:f0d0:1002:0011::2
+IPV6ADDR=2607:f0d0:1002:0011::2/64
 IPV6INIT=yes
-NETMASK=64
 NM_CONTROLLED=no
 ONBOOT=yes
 TYPE=Ethernet
diff --git a/tests/unittests/test_net.py b/tests/unittests/test_net.py
index 8bd3f433..feeab908 100644
--- a/tests/unittests/test_net.py
+++ b/tests/unittests/test_net.py
@@ -137,7 +137,7 @@ OS_SAMPLES = [
              """
 # Created by cloud-init on instance boot automatically, do not edit.
 #
-BOOTPROTO=static
+BOOTPROTO=none
 DEFROUTE=yes
 DEVICE=eth0
 GATEWAY=172.19.3.254
@@ -205,38 +205,14 @@ nameserver 172.19.0.12
 # Created by cloud-init on instance boot automatically, do not edit.
 #
 BOOTPROTO=none
-DEVICE=eth0
-HWADDR=fa:16:3e:ed:9a:59
-NM_CONTROLLED=no
-ONBOOT=yes
-TYPE=Ethernet
-USERCTL=no
-""".lstrip()),
-            ('etc/sysconfig/network-scripts/ifcfg-eth0:0',
-             """
-# Created by cloud-init on instance boot automatically, do not edit.
-#
-BOOTPROTO=static
 DEFROUTE=yes
-DEVICE=eth0:0
+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
-NM_CONTROLLED=no
-ONBOOT=yes
-TYPE=Ethernet
-USERCTL=no
-""".lstrip()),
-            ('etc/sysconfig/network-scripts/ifcfg-eth0:1',
-             """
-# Created by cloud-init on instance boot automatically, do not edit.
-#
-BOOTPROTO=static
-DEVICE=eth0:1
-HWADDR=fa:16:3e:ed:9a:59
-IPADDR=10.0.0.10
-NETMASK=255.255.255.0
+NETMASK1=255.255.255.0
 NM_CONTROLLED=no
 ONBOOT=yes
 TYPE=Ethernet
@@ -266,7 +242,7 @@ nameserver 172.19.0.12
                 }],
                 "ip_address": "172.19.1.34", "id": "network0"
             }, {
-                "network_id": "public-ipv6",
+                "network_id": "public-ipv6-a",
                 "type": "ipv6", "netmask": "",
                 "link": "tap1a81968a-79",
                 "routes": [
@@ -277,6 +253,20 @@ nameserver 172.19.0.12
                     }
                 ],
                 "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": [
                 {
@@ -296,41 +286,16 @@ nameserver 172.19.0.12
 # Created by cloud-init on instance boot automatically, do not edit.
 #
 BOOTPROTO=none
-DEVICE=eth0
-HWADDR=fa:16:3e:ed:9a:59
-NM_CONTROLLED=no
-ONBOOT=yes
-TYPE=Ethernet
-USERCTL=no
-""".lstrip()),
-            ('etc/sysconfig/network-scripts/ifcfg-eth0:0',
-             """
-# Created by cloud-init on instance boot automatically, do not edit.
-#
-BOOTPROTO=static
 DEFROUTE=yes
-DEVICE=eth0:0
+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/sysconfig/network-scripts/ifcfg-eth0:1',
-             """
-# Created by cloud-init on instance boot automatically, do not edit.
-#
-BOOTPROTO=static
-DEFROUTE=yes
-DEVICE=eth0:1
-HWADDR=fa:16:3e:ed:9a:59
 IPV6ADDR=2001:DB8::10
+IPV6ADDR_SECONDARIES="2001:DB9::10/64 2001:DB10::10/64"
 IPV6INIT=yes
 IPV6_DEFAULTGW=2001:DB8::1
-NETMASK=
+NETMASK=255.255.252.0
 NM_CONTROLLED=no
 ONBOOT=yes
 TYPE=Ethernet