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[OpenStack Infra <1925368@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/789929
Committed: https://opendev.org/openstack/neutron/commit/5fb5653ffe700a8f9fb0949d16ecbf0978b61fb6
Submitter: "Zuul (22348)"
Branch:    master

commit 5fb5653ffe700a8f9fb0949d16ecbf0978b61fb6
Author: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
Date:   Wed May 5 17:26:23 2021 +0000

    Check router routes connectivity when GW port is updated
    
    When the router GW interface is updated or deleted, the routes should
    be checked in other to prove all of them have connectivity to any of
    the router interface subnets.
    
    In a router, all routes nexthops must have connectivity with one
    interface subnet. If not, this route cannot send the packets to this
    route gateway; therefore this route becomes invalid.
    
    Closes-Bug: #1925368
    
    Change-Id: I7ce93b863b0dc0d4a2376fcfd602d2facb6fb2d0


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

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https://bugs.launchpad.net/bugs/1925368

Title:
  [L3] Router GW can be updated without checking router routes

Status in neutron:
  Fix Released

Bug description:
  When the router GW interface is updated or deleted, the routes should
  be checked in other to prove all of them have connectivity to any of
  the router interface subnets.

  In a router, all routes nexthops must have connectivity with one
  interface subnet. If not, this route cannot send the packets to this
  route gateway.

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