Comment 5 for bug 2069543

Unfortunately it's a 100% reproduce on that issue when spawning an instance using the trunk, that the tap interface is wrong.

I also saw that my hack isn't working 100% of the time either because it races with the tap existing.

We use openvswithch firewall driver and the only special config opt we set should be below in nova.conf and neutron.conf
[os_vif_ovs]
isolate_vif=True

for nova.conf we also set
[workarounds]
wait_for_vif_plugged_event_during_hard_reboot=normal