Comment 15 for bug 1940425

I agree with Sean in #14. In fact, I've been working on this Neutron patch https://review.opendev.org/c/openstack/neutron/+/837780 to do exactly what Sean proposes: Neutron should be able to handle the fact that now os-vif deletes the trunk bridge. I even think that we don't need this bug in Neutron. The work been done is covered by https://bugs.launchpad.net/neutron/+bug/1869244