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[Vladimir Georgiev <1846494@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I got two problems connected to IPv6 and neutron-openvswitch-agent
(Queens version of Openstack, Ubuntu 18.04):

The first problem:

The default value of "of_listen_address" is 127.0.0.1
(/etc/neutron/plugins/ml2/openvswitch_agent.ini).

When I changed it to its IPv6 equivalent "::1", it tries to pass that to
ovs-vswitchd as "tcp:::1:6633" which is not valid url according IPv6 and
as result ovs-vswitchd complains about that. When I set value to [::1]
with idea to get valid url "tcp:[::1]:6633, I got an exception:

Traceback (most recent call last):
  File "a.py", line 22, in <module>
    print(conf.OVS.of_listen_address)
  File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 3378, in __getattr__
    return self._conf._get(name, self._group)
  File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 2940, in _get
    value = self._do_get(name, group, namespace)
  File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 2983, in _do_get
    % (opt.name, str(ve)))
oslo_config.cfg.ConfigFileValueError: Value for option of_listen_address is not valid: [::1] is not IPv4 or IPv6 address

So the composing of url with of_listen_address with IPv6 and
of_listen_port is not done correctly.

The second problem:

When I try to set "ovsctl set-manager ptcp:6640:127.0.0.1" to be IPv6 to
its equivalent - "ovsctl set-manager ptcp:6640:[::1]", again in
"openvswitch_agent.ini", I got:

ovs-vsctl[1957]: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl set-manager ptcp:6640:[::1]
ovs-config.py[1962]: configobj.ParseError: Invalid line ('ovs-vsctl set-manager ptcp:6640:[::1]') (matched as neither section nor keyword) at line 58. 

Some times I saw also mismatched value as : "ptcp::1]:6640:[" . But I
lost steps for reproduction.

So again the composing of url with "of_listen_address" with IPv6 and
"of_listen_port" is not done correctly

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1846494

Title:
  neutron-openvswitch-agent and IPv6

Status in neutron:
  New

Bug description:
  I got two problems connected to IPv6 and neutron-openvswitch-agent
  (Queens version of Openstack, Ubuntu 18.04):

  The first problem:

  The default value of "of_listen_address" is 127.0.0.1
  (/etc/neutron/plugins/ml2/openvswitch_agent.ini).

  When I changed it to its IPv6 equivalent "::1", it tries to pass that
  to ovs-vswitchd as "tcp:::1:6633" which is not valid url according
  IPv6 and as result ovs-vswitchd complains about that. When I set value
  to [::1] with idea to get valid url "tcp:[::1]:6633, I got an
  exception:

  Traceback (most recent call last):
    File "a.py", line 22, in <module>
      print(conf.OVS.of_listen_address)
    File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 3378, in __getattr__
      return self._conf._get(name, self._group)
    File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 2940, in _get
      value = self._do_get(name, group, namespace)
    File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 2983, in _do_get
      % (opt.name, str(ve)))
  oslo_config.cfg.ConfigFileValueError: Value for option of_listen_address is not valid: [::1] is not IPv4 or IPv6 address

  So the composing of url with of_listen_address with IPv6 and
  of_listen_port is not done correctly.

  The second problem:

  When I try to set "ovsctl set-manager ptcp:6640:127.0.0.1" to be IPv6
  to its equivalent - "ovsctl set-manager ptcp:6640:[::1]", again in
  "openvswitch_agent.ini", I got:

  ovs-vsctl[1957]: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl set-manager ptcp:6640:[::1]
  ovs-config.py[1962]: configobj.ParseError: Invalid line ('ovs-vsctl set-manager ptcp:6640:[::1]') (matched as neither section nor keyword) at line 58. 

  Some times I saw also mismatched value as : "ptcp::1]:6640:[" . But I
  lost steps for reproduction.

  So again the composing of url with "of_listen_address" with IPv6 and
  "of_listen_port" is not done correctly

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