Comment 8 for bug 1411163

Reviewed: https://review.openstack.org/232911
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=9950ce2bbc5a554c211935a6652c304937d39195
Submitter: Jenkins
Branch: stable/kilo

commit 9950ce2bbc5a554c211935a6652c304937d39195
Author: venkata anil <email address hidden>
Date: Thu Jul 2 11:22:39 2015 +0000

    Update dhcp host portbinding on failover

    When a dhcp server is moved to new host on failover,
    tunnel is not created.

    When a dhcp server is moved to new host,
    1) network-hostagent binding is updated(properly i.e with new host).
    2) dhcp port-hostagent binding is not updated
       ( dhcp port is still bound to old host)
    If dhcp port-bound agent is different from the new dhcp agent
    (which is now taking care of this dhcp port), neutron plugin won't
     notify the l2pop, and hence tunnel is not created.

    As after failover, the new agent is taking care of this dhcp port,
    update portbinding with the new host. This will allow neutron plugin
    to notify l2pop(which will create tunnel).

    Change-Id: Ib7d7dcddee005395af116ccd31a43853332ae317
    Closes-bug: #1411163
    (cherry picked from commit 571453c614577ffd47e23de9a35863d2f2119583)