introduced the concept of connected routers: routers that are
connected to the same subnets. When a L3 agent is synching a router
with connected routers, the data of the entire set should be returned
to the agent by the Neutron server.
However, if an agent tries to synch a router with
no connected routers when the same agent has other routers that are
connected among them, the Neutron server returns the former and the
latter. For details of how this bug can manifest itself, please see .
This change prevents this situation: only the synched router is
(cherry picked from commit