Comment 1 for bug 1810706

We have a fix up in tempest waiting for reviews: https://review.openstack.org/449695

However, the root cause of this issue is this os-vif change:
https://github.com/openstack/os-vif/commit/165ed325917e5deadb274ad9c122db157c0b55b2#diff-024723487bc761f5ba9d39bbf77f7721

Numan was proposing to revert this change in os-vif as it causes unnecessary transitions of the vif port