DVR Cannot open network 'fip' namespace error when updating router's gateway

[Itzik Brown]

When updating a distributed router's gateway when one is already set there is an error in l3 agent's log on the node where 'dvr_snat' is running.

Cannot open network namespace "fip-dc7937bc-2627-422b-8c71-6779aa675a81": No such file or directory

2015-05-14 11:39:15.862 21386 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'fip-dc7937bc-2627-422b-8c71-6779aa675a81', 'ip', '-o', 'link', 'show', 'fpr-43e4f718-e'] create_process /usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py:84
2015-05-14 11:39:15.942 21386 DEBUG neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'fip-dc7937bc-2627-422b-8c71-6779aa675a81', 'ip', '-o', 'link', 'show', 'fpr-43e4f718-e']
Exit code: 1
Stdin:
Stdout:
Stderr: Cannot open network namespace "fip-dc7937bc-2627-422b-8c71-6779aa675a81": No such file or directory
 execute /usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py:134
2015-05-14 11:39:15.943 21386 DEBUG neutron.agent.l3.router_info [-] No Interface for floating IPs router: 43e4f718-e0fc-435a-8144-445aa54eeecc process_floating_ip_addresses /usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py:229

It seems that it's not related to just this action but also for association of floating IP.

Version
======
python-neutron-2015.1.0-1.el7ost.noarch

[Armando Migliaccio (armando-migliaccio)]

This bug is > 365 days without activity. We are unsetting assignee and milestone and setting status to Incomplete in order to allow its expiry in 60 days.

If the bug is still valid, then update the bug status.

[Launchpad Janitor (janitor)]

[Expired for neutron because there has been no activity for 60 days.]