Open Stack

ipv6 floating Ip is currently not supported.

Check out this review and the associated bug: https://review.openstack.org/#/c/131145/

—Robert

On 10/30/14, 6:47 AM, "Jerry Xinyu Zhao" <xyzjerry at gmail.com<mailto:xyzjerry at gmail.com>> wrote:

Unfortunately, it seems to be the case. Just saw there is a summit talk about it called IPv6 Feature in Openstack Juno. Dual stack floating ip support is planned in K.
However, I couldn't even get single IPv6 floating IP to work. Even though I configured only IPv6 subnet for the external network, I got those errors from neutron-l3-agent when associating the floating IP to instance.

Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: Command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-b243c786-4648-4d69-b749-ee5fad02069b', 'iptables-restore', '-c']
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: Exit code: 2
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: Stdout: ''
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: Stderr: "iptables-restore v1.4.21: host/network `2001:470:1f0f:cb4::7' not found\nError occurred at line: 39\nTry `iptables-restore -h' or 'iptables-restore --help' for more information.\n"
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 10:55:32.407 30286 ERROR neutron.agent.linux.iptables_manager [-] IPTablesManager.apply failed to apply the following set of iptables rules:
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       1. # Generated by iptables-save v1.4.21 on Wed Oct 29 10:55:32 2014
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       2. *raw
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       3. :PREROUTING ACCEPT [148546:23091816]
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       4. :OUTPUT ACCEPT [219:20352]
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       5. :neutron-l3-agent-OUTPUT - [0:0]
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       6. :neutron-l3-agent-PREROUTING - [0:0]
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       7. [148546:23091816] -A PREROUTING -j neutron-l3-agent-PREROUTING
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       8. [219:20352] -A OUTPUT -j neutron-l3-agent-OUTPUT
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:       9. COMMIT
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:      10. # Completed on Wed Oct 29 10:55:32 2014
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:      11. # Generated by iptables-save v1.4.21 on Wed Oct 29 10:55:32 2014
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:      12. *mangle
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:      13. :PREROUTING ACCEPT [148546:23091816]
Oct 29 10:55:32 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:      14. :INPUT ACCEPT [55837:18978656]

On Thu, Oct 30, 2014 at 6:32 PM, Harm Weites <harm at weites.com<mailto:harm at weites.com>> wrote:
I'm seeing the same error when trying to setup a whole new network through Horizon with external gateway and an ipv4 and ipv6 subnet. Eg, without floating ip.

l3_agent.py is trying this: prefixlen = netaddr.IPNetwork(port['subnet']['cidr']).prefixlen

Looking inside port[] lists the following items:

2014-10-30 10:26:05.834 21765 ERROR neutron.agent.l3_agent [-] Ignoring multiple IPs on router port b4d94d2a-0ba2-43f0-be5f-bb53e89abe32
2014-10-30 10:26:05.836 21765 INFO neutron.agent.l3_agent [-] CHECK: port[status] = DOWN
2014-10-30 10:26:05.837 21765 INFO neutron.agent.l3_agent [-] CHECK: port[binding:host_id] = myhostname
2014-10-30 10:26:05.839 21765 INFO neutron.agent.l3_agent [-] CHECK: port[name] =
2014-10-30 10:26:05.840 21765 INFO neutron.agent.l3_agent [-] CHECK: port[allowed_address_pairs] = []
2014-10-30 10:26:05.841 21765 INFO neutron.agent.l3_agent [-] CHECK: port[admin_state_up] = True
2014-10-30 10:26:05.843 21765 INFO neutron.agent.l3_agent [-] CHECK: port[network_id] = 00539791-0b2f-4628-9599-622fa00993b5
2014-10-30 10:26:05.844 21765 INFO neutron.agent.l3_agent [-] CHECK: port[tenant_id] =
2014-10-30 10:26:05.846 21765 INFO neutron.agent.l3_agent [-] CHECK: port[extra_dhcp_opts] = []
2014-10-30 10:26:05.847 21765 INFO neutron.agent.l3_agent [-] CHECK: port[binding:vif_details] = {}
2014-10-30 10:26:05.848 21765 INFO neutron.agent.l3_agent [-] CHECK: port[binding:vif_type] = binding_failed
2014-10-30 10:26:05.849 21765 INFO neutron.agent.l3_agent [-] CHECK: port[device_owner] = network:router_gateway
2014-10-30 10:26:05.851 21765 INFO neutron.agent.l3_agent [-] CHECK: port[mac_address] = fa:16:3e:53:89:8d
2014-10-30 10:26:05.853 21765 INFO neutron.agent.l3_agent [-] CHECK: port[binding:profile] = {}
2014-10-30 10:26:05.854 21765 INFO neutron.agent.l3_agent [-] CHECK: port[binding:vnic_type] = normal
2014-10-30 10:26:05.856 21765 INFO neutron.agent.l3_agent [-] CHECK: port[fixed_ips] = [{u'subnet_id': u'faaf9c91-19ce-4c14-8f86-c81949cdbac5', u'ip_address': u'192.168.64.30'}, {u'subnet_id': u'381d0c54-1a4e-4a27-9858-a81202e81487', u'ip_address': u'2001:470:ffff:64::aaaa'}]
2014-10-30 10:26:05.857 21765 INFO neutron.agent.l3_agent [-] CHECK: port[id] = b4d94d2a-0ba2-43f0-be5f-bb53e89abe32
2014-10-30 10:26:05.858 21765 INFO neutron.agent.l3_agent [-] CHECK: port[security_groups] = []
2014-10-30 10:26:05.860 21765 INFO neutron.agent.l3_agent [-] CHECK: port[device_id] = d3bbec5a-2075-4229-ba88-698f27cd0943

_set_subnet_info() is set to log an ERROR when it encounters multiple addresses and then happily continues doing something:

 prefixlen = netaddr.IPNetwork(port['subnet']['cidr']).prefixlen
 port['ip_cidr'] = "%s/%s" % (ips[0]['ip_address'], prefixlen)

Operations with just 1 (ipv6) ip go without any issues, the adress is added to a namespace and pongs just fine. Adding 2 subnets to this external net and creating a gateway to it on the l3 router causes a problem.

Do we need to wait for K before we can fully go dual-stack?

- Harm

op 29-10-14 15:29, Jerry Xinyu Zhao schreef:
Hi
I want to use both ipv4 and ipv6 for floating ip at the same time. However, I have the following issue when setting router gateway or associate floating ip to an instance.
Is it supported in the first place? What should I do to make it work?
Thanks!

neutron router-list
+--------------------------------------+----------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| id                                   | name           | external_gateway_info                                                                                                                                                                                                                                                                 | distributed | ha    |
+--------------------------------------+----------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| b243c786-4648-4d69-b749-ee5fad02069b | default-router | {"network_id": "02eca54a-420d-4d52-b045-1207e17994e5", "enable_snat": true, "external_fixed_ips": [{"subnet_id": "a188333f-77c3-40d9-9048-e733c4da30b1", "ip_address": "162.3.123.51"}, {"subnet_id": "14d9dd91-b315-43bc-818d-ab21f62c1ebb", "ip_address": "2001:470:1f0f:cb4::7"}]} | False       | False |
+--------------------------------------+----------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+


neutron-l3-agent log:

Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 ERROR neutron.agent.l3_agent [-] Ignoring multiple IPs on router port 18c8874c-f9a0-4274-8f38-fab3da754c2b
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 ERROR neutron.agent.l3_agent [-] 'subnet'
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent Traceback (most recent call last):
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/common/utils.py", line 341, in call
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent     return func(*args, **kwargs)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/l3_agent.py", line 948, in process_router
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent     self._set_subnet_info(ex_gw_port)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/l3_agent.py", line 864, in _set_subnet_info
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent     prefixlen = netaddr.IPNetwork(port['subnet']['cidr']).prefixlen
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent KeyError: 'subnet'
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: 2014-10-29 14:10:08.941 30286 TRACE neutron.agent.l3_agent
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: Traceback (most recent call last):
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/eventlet/greenpool.py", line 82, in _spawn_n_impl
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     func(*args, **kwargs)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/l3_agent.py", line 1837, in _process_router_update
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     self._process_router_if_compatible(router)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/l3_agent.py", line 1812, in _process_router_if_compatible
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     self.process_router(ri)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/common/utils.py", line 344, in call
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     self.logger(e)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/openstack/common/excutils.py", line 82, in __exit__
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     six.reraise(self.type_, self.value, self.tb)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/common/utils.py", line 341, in call
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     return func(*args, **kwargs)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/l3_agent.py", line 948, in process_router
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     self._set_subnet_info(ex_gw_port)
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:   File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutron/agent/l3_agent.py", line 864, in _set_subnet_info
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent:     prefixlen = netaddr.IPNetwork(port['subnet']['cidr']).prefixlen
Oct 29 14:10:08 overcloud-controller0-ghqtsmsgjgck neutron-l3-agent: KeyError: 'subnet'



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