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[Assaf Muller <amuller@xxxxxxxxxx>]

Public bug reported:

1) Create a HA router on a setup with two L3 agents
2) Find out who the master is
3) Find out what is the HA port used by the master instance of the router
4) Set it to admin state down

The master instance won't be able to send VRRP messages, but since the
tap device in the router namespace is still up, keepalive doesn't
transition to backup or fault. It remains in the master state. The
backup will stop receiving VRRP messages and will transition to master
as well.

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: l3-ha

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https://bugs.launchpad.net/bugs/1366890

Title:
  Setting admin_state_up=False on a HA port causes split brain in HA
  routers

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  1) Create a HA router on a setup with two L3 agents
  2) Find out who the master is
  3) Find out what is the HA port used by the master instance of the router
  4) Set it to admin state down

  The master instance won't be able to send VRRP messages, but since the
  tap device in the router namespace is still up, keepalive doesn't
  transition to backup or fault. It remains in the master state. The
  backup will stop receiving VRRP messages and will transition to master
  as well.

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