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> However, I briefly looked through the L2 agent code and didn't see a
> periodic task to resync the port information to protect from a neutron
> server that failed to send a notification because it crashed or lost its
> amqp connection. The L3 agent has a period sync routers task that helps in
> this regard. Maybe another neutron developer more familiar with the L2
> agent can chime in here if I'm missing anything.

i don't think you are missing anything.
periodic sync would be a good improvement.

YAMAMAOTO Takashi