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Hi,

Maybe You hit this bug [1]. Please check what ovn version do You have and maybe
update it if needed.

On Mon, Sep 07, 2020 at 06:23:44PM +0430, Reza Bakhshayeshi wrote:
> Hi all,
> 
> I deployed an environment with TripleO Ussuri with 3 HA Controllers and
> some Compute nodes with neutron-ovn-dvr-ha.yaml
> Instances have Internet access through routers with SNAT traffic (in this
> case traffic is routed via a controller node), and by assigning IP address
> directly from provider network (not having a router).
> 
> But in case of assigning FIP from provider to an instance, VM Internet
> connection is lost.
> Here is the output of router nat lists, which seems OK:
> 
> 
> # ovn-nbctl lr-nat-list 587182a4-4d6b-41b0-9fd8-4c1be58811b0
> TYPE             EXTERNAL_IP        EXTERNAL_PORT    LOGICAL_IP
>  EXTERNAL_MAC         LOGICAL_PORT
> dnat_and_snat    X.X.X.X                      192.168.0.153
> fa:16:3e:0a:86:4d    e65bd8e9-5f95-4eb2-a316-97e86fbdb9b6
> snat             Y.Y.Y.Y                      192.168.0.0/24
> 
> 
> I replaced FIP with X.X.X.X and router IP with Y.Y.Y.Y
> 
> When I remove * EXTERNAL_MAC* and *LOGICAL_PORT*, FIP works fine and as it
> has to be, but traffic routes from a Controller node and it won't be
> distributed anymore.
> 
> Any idea or suggestion would be grateful.
> Regards,
> Reza

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1834433

-- 
Slawek Kaplonski
Principal software engineer
Red Hat