Hi! We're running Openstack Wallaby on Ubuntu 20.04, 3 high-performance infra nodes with a RabbitMQ cluster. I updated Neutron components to version 18.6.0, which recently became available in the Cloud Archive repository ( http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/wallaby main). Normally this would be an easy update, but this time neutron-dhcp-agent doesn't work properly: at start DHCP configuration for each port (and network) takes a lot longer than it used to with the previous Neutron version (18.5.0), with a big number of networks and ports things get rather bad. I tried to describe the issue in more detail here: https://bugs.launchpad.net/cloud-archive/+bug/2011513
As for some reason I am unable to target a specific package version or package in general, I don't know if anyone will notice that submission. I would very much appreciate any advice, especially regarding: 1) submitting the bug report in a way that it specifically targets Ubuntu 20.04, Openstack Wallaby, and Neutron, so that the relevant developer(s) are aware of this possible bug or regression; 2) getting the previous version of Neutron packages - I don't know if that is possible, as the Cloud Archive repository only has the latest versions, and it's unclear how to roll back from this update. Thank you for your time! Best regards, Zakhar
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