[openstack-dev] [neutron][stable] - exception for stable/kilo DVR back-ports

Assaf Muller assaf at redhat.com
Wed May 4 21:26:19 UTC 2016

On Wed, May 4, 2016 at 4:54 PM, Kevin Benton <kevin at benton.pub> wrote:
> Hello,
> I would like to propose a freeze exception for
> https://review.openstack.org/#/c/312253/ and
> https://review.openstack.org/#/c/312254/ . They address a bug in DVR that
> causes floating IPs to eventually break after an L3 agent has been
> restarted. It's a serious bug but it's very subtle because it takes a busy
> system and bad luck to trigger it.
> If we decide against the back-port a workaround could be to advise all
> distros/operators to call the namespace cleanup script every time the l3
> agent is restarted, which would prevent this issue, but at the cost of
> disrupting traffic on the agent restart.

That's not something I could seriously suggest to users, meaning that
said users will just cherry pick these patches anyway. Might as well
prevent the pain proactively and merge it to stable/kilo.

> Cheers,
> Kevin Benton
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