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[OpenStack Infra <1756406@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/553870
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=6b13cf0bee67e6196201e7863b1facce54b6d6f6
Submitter: Zuul
Branch:    master

commit 6b13cf0bee67e6196201e7863b1facce54b6d6f6
Author: Swaminathan Vasudevan <SVasudevan@xxxxxxxx>
Date:   Wed Mar 14 16:59:32 2018 -0700

    DVR: Fix mac format for backward compatibility with vsctl api
    
    Fix the mac address format for backward compatibility with
    vsctl ovs api
    
    Closes-Bug: #1756406
    Change-Id: I3ba11fae433b437d9d3a0b12dd8a11fe1b35046a


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

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https://bugs.launchpad.net/bugs/1756406

Title:
  DVR: Fix dvr mac address format to be backward compatible with non
  native openflow interface

Status in neutron:
  Fix Released

Bug description:
  DVR MAC address is configured on the server for every node that is
  configured to run in one of the dvr agent modes ( dvr,dvr_snat and
  dvr_no_external).

  The DVR MAC addresses are stored in the 'AA-BB-CC-DD-EE-FF' format.

  When the agent tries to configure the DVR MAC addresses into the
  openflow rules using the native interface drivers, they are ok.

  But when used with the non native interface drivers this throws an
  error as shown below.

  Unable to execute ['ovs-ofctl', 'add-flows', 'br-vlan1078', '-'].
  Exception: Exit code: 1; Stdin:
  hard_timeout=0,idle_timeout=0,priority=2,table=3,cookie=12002607947458125225,dl_src=FA-16
  -3F-AA-78-20,actions=output:2; Stdout: ; Stderr: ovs-ofctl: -:1: FA-16
  -3F-AA-78-20: invalid Ethernet address.

  This is also seen in the Master branch.
  So to provide backward compatibility, we need to add a patch to change the format of the MAC before it is handed over to the openflow interface driver.

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