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:
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