Comment 17 for bug 1550400

Reviewed: https://review.openstack.org/361301
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=6865f4d9f22d5daa2f07ff9651c2280aed489c8c
Submitter: Jenkins
Branch: master

commit 6865f4d9f22d5daa2f07ff9651c2280aed489c8c
Author: Andreas Scheuring <email address hidden>
Date: Mon Aug 29 17:08:34 2016 +0200

    macvtap: Mech driver detects invalid migration

    As of today, Macvtap agent allows invalid live migrations
    from a host with interface mapping 'physnet1:eth1' to a host
    with mapping 'physnet1:eth2'. Migration places the macvtap on
    the target on 'eth2' instead of 'eth1'. This fix detects
    such a migration in the mech driver and lets the portbinding fail.

    Nova will put the instance in error state. The instance might
    still be able to access the wrong network it migrated to, as
    today there is no communication to the agent after a failed binding
    after a migration. But at least the user is now aware that
    something went wrong.

    Change-Id: I92cd6411fe88483b921c92f219afa8e846cc0137
    Depends-On: Ib1cc44bf9d01baf4d1f1d26c2a368a5ca7c6ab68
    Partial-Bug: #1550400