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[OpenStack Infra <1876092@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/726044
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=cd721a7dcb9073eca2671ffdc9dc7ed9819163ed
Submitter: Zuul
Branch:    master

commit cd721a7dcb9073eca2671ffdc9dc7ed9819163ed
Author: Yang JianFeng <yjf1970231893@xxxxxxxxx>
Date:   Thu May 7 05:36:31 2020 +0000

    Make DVR router support FLAT network for ovs-agent
    
    Currently codes only support assocate tunnel network and vlan network
    to DVR router. This patch add codes that make the flat network assocate
    to DVR router and make it work fine.
    
    The patch also remove two unused constant entries: 'FLAT_VLAN_ID' and
    'LOCAL_VLAN_ID'
    
    Change-Id: I7d792ce288d96548298f169748565266a130bd86
    Closes-Bug: #1876092


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

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https://bugs.launchpad.net/bugs/1876092

Title:
  DVR with Flat network result in ICMP reply DUP

Status in neutron:
  Fix Released

Bug description:
  Test env:
  Three compute node
  One network node
  Two ovs bridge binding to physical NIC and mapping to two physical_network respectively

  Steps to reproduce:
  1. Create two flat networks and subnets on physical_networks above mentioned respectively.
  2. Then assocate both of them to a DVR router.
  3. Create VMs on these two networks.
  4. On one VM ping another VM 

  When The VMs hosting on different nodes, sometimes, the VM which
  execute ping will receice duplicate reply.

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