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[OpenStack Infra <1599287@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/337855
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=34e51cad42960bdb08a92d1a60a33594bdf057ba
Submitter: Jenkins
Branch:    master

commit 34e51cad42960bdb08a92d1a60a33594bdf057ba
Author: Swaminathan Vasudevan <swaminathan.vasudevan@xxxxxxx>
Date:   Tue Jul 5 13:22:04 2016 -0700

    DVR: Cleanup the stale snat redirect rules in router namespace
    
    After the stale snat namespace is deleted the snat redirect rules
    in router namespace should be cleaned.
    
    Here we are basically reading the ip rule from the router namespace
    and just cleaning up all the snat redirect rules leaving the default
    ones untouched.
    
    Change-Id: Ic505a46e56d9e950bd36a1596d3f1adfb5ef5577
    Closes-Bug: #1599287


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

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https://bugs.launchpad.net/bugs/1599287

Title:
  Cleanup snat redirect rules when agent restarts after stale snat
  namespace is cleaned.

Status in neutron:
  Fix Released

Bug description:
  When the L3 agent is dead, if the gateway is removed, the snat
  namespace and its rules are not properly cleaned when agent restarts.

  Even though the patch https://review.openstack.org/#/c/326729/
  addresses the cleanup of the snat namespace, it does not remove the
  redirect rules and the gateway device from the router namespace when
  gateway is disabled.

  When agent restarts the agent does not get the gateway data from the
  server, and so it is not possible for the agent to clean it properly.

  In order to clean the snat redirect rules, the gateway data should be
  cached to the local file system and reused later when necessary.

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