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[Eugene Nikanorov <enikanorov@xxxxxxxxxxxx>]

It's correct observation, Nate.
Linux bridge agent uses this notification to delete network's bridge unlike OVS agent which only needs port delete notifications.
I think it's not a big deal if notifications are just lost if nobody consumes them.

Closing as invalid.

** Changed in: neutron
       Status: Confirmed => Invalid

** Changed in: neutron
     Assignee: Eugene Nikanorov (enikanorov) => (unassigned)

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https://bugs.launchpad.net/bugs/1540555

Title:
  Nobody listens to network delete notifications

Status in neutron:
  Invalid

Bug description:
  Here it can be seen that agents are notified of network delete event:
  https://github.com/openstack/neutron/blob/8.0.0.0b2/neutron/plugins/ml2/rpc.py#L304

  But on the agent side only network update events are being listened:
  https://github.com/openstack/neutron/blob/8.0.0.0b2/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py#L374

  That was uncovered during testing of Pika driver, because it does not
  allow to send messages to queues which do not exist, unlike current
  Rabbit (Kombu) driver. That behaviour will probably be changed in Pika
  driver, but still it is worthy to get rid of unnecessary notifications
  on Neutron side.

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