[openstack-dev] [nova] Multiple default routes in instance
mgagne at calavera.ca
Wed May 17 14:03:35 UTC 2017
When you attach multiple networks/interfaces to an instance and at
least 2 subnets have a default route, you end up with 2 default routes
If cloud-init or any other in-guest agent is used to configure the
network, you could end up with 2 default routes and to an extend, with
non-working networking. (like we found out recently)
How should we handle this situation where you could end up with 2
subnets, each having a default route?
* Should Nova decide which default route to expose to the instance?
* Should the in-guest agent pick one?
I'm looking for opinions and advises on how to fix this issue.
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