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[Mohammed Naser <2038978@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

When using OVN, if you have a virtual router with a gateway that is in
subnet A, and has a port that has a floating IP attached to it from
subnet B, they seem to not be reachable.

https://mail.openvswitch.org/pipermail/ovs-dev/2021-July/385253.html

There was a fix brought into OVN with this not long ago, it introduces
an option called `options:add_route` to `true`.

see: https://mail.openvswitch.org/pipermail/ovs-
dev/2021-July/385255.html

I think we should do this in order to mirror the same behaviour in
ML2/OVS since we install scope link routes.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2038978

Title:
  [OVN] ARP + Floating IP issues

Status in neutron:
  New

Bug description:
  When using OVN, if you have a virtual router with a gateway that is in
  subnet A, and has a port that has a floating IP attached to it from
  subnet B, they seem to not be reachable.

  https://mail.openvswitch.org/pipermail/ovs-dev/2021-July/385253.html

  There was a fix brought into OVN with this not long ago, it introduces
  an option called `options:add_route` to `true`.

  see: https://mail.openvswitch.org/pipermail/ovs-
  dev/2021-July/385255.html

  I think we should do this in order to mirror the same behaviour in
  ML2/OVS since we install scope link routes.

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