It seems there is already a similar nova bug[1] Looks like interface detach is slower in xenial libvirt.
[1] https://bugs.launchpad.net/nova/+bug/1607714
It seems there is already a similar nova bug[1] Looks like interface detach is slower in xenial libvirt.
[1] https:/ /bugs.launchpad .net/nova/ +bug/1607714