Hi,
in oVirt we have come across issue with a missing vnet interface (Original bug report [0]). This happened once in a huge batch of migrations e.g 2 failed out of 1200 and we came to conclusion that this is happening somewhere out of our control as libvirt reports:
2020-05-17 02:34:11,530+0000 ERROR (migsrc/623f6cc1) [virt.vm] (vmId='623f6cc1-d49f-43a4-8170-b5fec01f2897') operation failed: binding 'vnet54' is already being removed (migration:278)

Unfortunately we don't have libvirt logs and producing them might not be possible. Is there anything else we can do to tackle down this issue?

Thank you.
Regards,
Ales

[0] https://bugzilla.redhat.com/1837395
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Ales Musil

Software Engineer - RHV Network

Red Hat EMEA

amusil@redhat.com    IM: amusil