Comment 7 for bug 1754563

Reviewed: https://review.openstack.org/552111
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=61aa1fe9512f2a71feffbcce55b82a9fe17651c3
Submitter: Zuul
Branch: stable/queens

commit 61aa1fe9512f2a71feffbcce55b82a9fe17651c3
Author: Brian Haley <email address hidden>
Date: Mon Mar 12 14:29:48 2018 -0400

    Config privsep in the linuxbridge agent

    In order to enable arp_responder code, the agent must have
    privsep configured or calls to add fdb entries will fail.

    This is a one-file cherry pick of the master change referenced
    below as the rest does not apply.

    Closes-bug: 1754563

    (cherry picked from commit e0223edf88abc8c1bb8714121a0df8a9997c7a30)

    Change-Id: I80b8c02da5d769dcb7bbf6f9e4659889c7c92650