Comment 7 for bug 1374947

Reviewed: https://review.openstack.org/122357
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=e90d6d6c833db51964037afd1c4aa1f521ee380a
Submitter: Jenkins
Branch: master

commit e90d6d6c833db51964037afd1c4aa1f521ee380a
Author: John Schwarz <email address hidden>
Date: Thu Sep 18 11:24:53 2014 +0300

    Iterate over same port_id if more than one exists

    In certain cases where multiple ports can have the same
    external_ids:iface_id property, the ovs agent will arbitrarily choose
    one and ignore the rest. In case the chosen port isn't on the
    integration bridge the ovs agent is managing, an error is returned to
    the calling function. This is faulty since one of the other ports may
    belong to the correct bridge and it should be chosen instead.

    This is interesting for future L3 HA integration tests, where 2
    different instances of l3 agents are needed to run on the same machine.
    In this case, both agents will register ports which have the same
    iface_id property, but obviously only one of the ports is relevant for
    each agent.

    Closes-bug: #1370914
    Related-bug: #1374947
    Change-Id: I05d70417e0f78ae51a9ce377fc93a3f12046b313