Comment 8 for bug 1511216

Reviewed: https://review.openstack.org/248261
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=8f9c42758a3df46b788cbfcfa8cc40faeb7d43e3
Submitter: Jenkins
Branch: stable/liberty

commit 8f9c42758a3df46b788cbfcfa8cc40faeb7d43e3
Author: Sam Yaple <email address hidden>
Date: Thu Nov 12 17:05:31 2015 +0000

    Fix namespace regression for neutron

    Due the to way network namespaces work, they will not survive a
    container restart. This is not an issue related to Kolla or Neutron
    but rather an issue with how network namespaces work.

    This is putting back into place a workaround that was in correctly
    removed in the past. We simply cleanup the namespace cruft when the
    neutron-agents container restarts thus avoiding this issue.

    Change-Id: Ic16f2f766b4fa46347ea14a1ece5a4653c69d779
    Closes-Bug: #1511216
    (cherry picked from commit baf9d93358f8fc79df9bb71f24dbc50b85860ea1)