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Reviewed:  https://review.openstack.org/289526
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=4f04102e5769930b03b9f28616c7734b74bbe868
Submitter: Jenkins
Branch:    master

commit 4f04102e5769930b03b9f28616c7734b74bbe868
Author: James Anziano <janzian@xxxxxxxxxx>
Date:   Mon Mar 7 19:08:39 2016 +0000

    Ensures DNS_DRIVER is loaded before it is checked
    
    Previously it was possible for DNS_DRIVER to be checked here before anything
    had attempted to load it, causing the check to erroneuously fail. This patch
    makes sure that the check will not fail simply because nothing had loaded it
    prior by attempting to load it immediately before the check.
    
    Change-Id: I34537beaf675db2634493dfef27b69051a8d0781
    Closes-Bug: 1554151


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

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https://bugs.launchpad.net/bugs/1554151

Title:
  update_port failure across server restart

Status in neutron:
  Fix Released

Bug description:
  Steps to reproduce:
  Make sure your environment is configured to use the dns-integration extension.
  Have an existing port created. Restart the server. It might be helpful first to insert a line into the beginning of the  process_update_port method in neutron/neutron/plugins/ml2/extensions/dns_integration.py that prints out the DNS_DRIVER variable. It will be None the first time this method is called, afterwards it will correctly be an instance of your DNS driver object.
  After restarting the server, run neutron port-update my-port with any arguments.
  While the behavior is the same regardless of the argument, the bug only becomes a problem if the arguments are relevant to the DNS extension, such as dns_name or updating the IP address.

  The command will claim to have completed successfully, but the DNS
  driver is not loaded until the end of the process, after it has been
  used. Certain functions will check to make sure the DNS driver has
  been loaded and will exit silently and prematurely because it hasn't
  been loaded yet. Any subsequent port-update commands will be fine
  because the driver is now loaded until the server gets restarted
  again.

  DevStack all-in-one built from master
  Perceived severity: medium

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