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[norman shen <1968837@xxxxxxxxxxxxxxxxxx>]

Public bug reported:


We are using Rocky 13.0.6 neutron which seems removing router namespace if retry limit got hit. 

After some investigations, it seems that delete a server which already associates with a floating ip address
seems causes a broadcast notification to all related routers. In our cases, we have around 300 compute nodes and they all have l3 dvr agents running on.

the related code snippet is
https://github.com/openstack/neutron/blob/bb4c26eb7245465bf7cea7e0f07342601eb78ede/neutron/db/l3_db.py#L1999,
so my question is: is it still relevant to have it if dvr is enabled?

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1968837

Title:
  too many l3 dvr agents got notifications after a server got deleted

Status in neutron:
  New

Bug description:
  
  We are using Rocky 13.0.6 neutron which seems removing router namespace if retry limit got hit. 

  After some investigations, it seems that delete a server which already associates with a floating ip address
  seems causes a broadcast notification to all related routers. In our cases, we have around 300 compute nodes and they all have l3 dvr agents running on.

  the related code snippet is
  https://github.com/openstack/neutron/blob/bb4c26eb7245465bf7cea7e0f07342601eb78ede/neutron/db/l3_db.py#L1999,
  so my question is: is it still relevant to have it if dvr is enabled?

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