Comment 5 for bug 1881995

Looks like there is a race condition between 2 different RPCs: "router_added_to_agent" and "routers updated notification" according to your paste log [1].

"router_added_to_agent" has request-id req-4746c297-5636-4ecd-bc8e-e6bc862bd2b1, while "routers updated notification" has req-700a760c-2f07-4744-9db1-761e3620e168.

The root cause could be the router_info is still in the agent cache, so one RPC hit the update procedure which will not run initialize.

[1] http://paste.openstack.org/show/794506/