OpenNebula: Update network to return v2 config rather than ENI.

OpenNebulaNetwork.gen_conf() was previously returning ENI format.
This is updated to return netplan/v2 config.
The changes here also adds support for IPv6 configuration distributed
from OpenNebula and fixes some issues about nameserver information.

1 files changed, 10 insertions, 0 deletions

diff --git a/cloudinit/net/network_state.py b/cloudinit/net/network_state.py
index 1dd7ded7..6d63e5c5 100644
--- a/cloudinit/net/network_state.py
+++ b/cloudinit/net/network_state.py
@@ -708,6 +708,7 @@ class NetworkStateInterpreter(object):
 
         gateway4 = None
         gateway6 = None
+        nameservers = {}
         for address in cfg.get('addresses', []):
             subnet = {
                 'type': 'static',
@@ -723,6 +724,15 @@ class NetworkStateInterpreter(object):
                     gateway4 = cfg.get('gateway4')
                     subnet.update({'gateway': gateway4})
 
+            if 'nameservers' in cfg and not nameservers:
+                addresses = cfg.get('nameservers').get('addresses')
+                if addresses:
+                    nameservers['dns_nameservers'] = addresses
+                search = cfg.get('nameservers').get('search')
+                if search:
+                    nameservers['dns_search'] = search
+                subnet.update(nameservers)
+
             subnets.append(subnet)
 
         routes = []