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[OpenStack Infra <1640283@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/395125
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=7403bccbc351d53bbc31d6ba8017e68c754f93fd
Submitter: Jenkins
Branch:    master

commit 7403bccbc351d53bbc31d6ba8017e68c754f93fd
Author: Omer Anson <omer.anson@xxxxxxxxxxxxxxxx>
Date:   Tue Nov 8 18:08:50 2016 +0200

    Install OVS from git if current version < 2.5.1
    
    In OVS version 2.5.1 there are several bug fixes to issues that Neutron
    encounters. This fix allows devstack to install a newer version of OVS,
    by default version 2.5.1.
    
    Specifically, for bug 1640283, we need the following commit from OVS:
    8c0b419a0b9ac0141d6973dcc80306dfc6a83d31 ofproto/trace: Fix "unchanged"
    output for Final flow
    
    The version is overridable by NEUTRON_OVERRIDE_OVS_BRANCH variable.
    
    Change-Id: Icc9d9811e6fc1935966241ed499c5e597a675877
    Related-Bug: 1602567
    Closes-Bug: 1640283


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

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https://bugs.launchpad.net/bugs/1640283

Title:
  Xenial Experimental: Unchanged trace is not detected as such, and
  fails tests

Status in neutron:
  Fix Released

Bug description:
  On the gate, tests that run ovs-appctl ofproto/trace (i.e. simulate a
  packet passing through the OVS/OpenFlow pipeline) do not detect that
  the packet is unchanged unless the flow states 'unchanged.' This
  behaviour does not work in OVS 2.5.0, and was fixed in OVS 2.5.1.

  Reproduction: See 'check experiment' tests, fullstack-xenial, test_install_flood_to_tun.
  Reproducible on: Ubuntu Xenial, or any installation with OVS 2.5.0.

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