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[OpenStack Infra <1365461@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/273546
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=185d6cbc648fd041402a5034b04b818da5c7136e
Submitter: Jenkins
Branch:    master

commit 185d6cbc648fd041402a5034b04b818da5c7136e
Author: Lubosz Kosnik <lubosz.kosnik@xxxxxxxxx>
Date:   Thu Jan 28 14:44:00 2016 +0100

    Add support for Keepalived VRRP health check
    
    Adds functionality to generate bash script which verifies health of current
    keepalived instance by pinging all available and configured GW addresses.
    This functionality supports IPv4 and IPv6 by detecting needed ping version
    using netaddr.
    
    DocImpact:
    Added a new parameter to 'l3_agent.ini' named
    'ha_vrrp_health_check_interval' which is by default set to 0 (disabled).
    Values > 0 designate health check functionality should be enabled.
    Requires allowed ICMP ECHO_REQUEST because that is disabled by default.
    
    Co-Authored-By: Artur Korzeniewski <artur.korzeniewski@xxxxxxxxx>
    Change-Id: Ib4d0691f432830357ea3f113036719645bc59a62
    Closes-Bug: #1365461


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1365461

Title:
  HA router should failover if GW address is not reachable

Status in neutron:
  Fix Released

Bug description:
  If a HA router has an external interface defined then it should use a
  custom keepalived health check to monitor the default gateway. If it
  isn't reachable after X attempts, lower its own priority and failover.

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