On 10/7/25 5:17 PM, Martin Kennelly wrote:
> Hi OVN team,
> 

Hi Martin,

> I would like to request a backport of the following patch titled
> "northd: Introduce disable_garp_rarp option for logical_router
> table" [1] to the 25.09.z branch.
> 

Just in case there were small tweaks between what was on patchwork and
what actually ended up on the main branch:

https://github.com/ovn-org/ovn/commit/4ed3b96

> We are maintaining a network plugin - ovn-kubernetes. We utilize the
> full OVN stack per host.
> When our network plugin, which programs OVN is down/not reconciling, we
> want to be able to suppress ovn-controller generated GARPs on its
> startup, resulting from SNATs.
> When our network plugin is down, we cannot be sure if the external IP
> defined in the SNAT has moved to another node. 
> 
> WIthout the aforementioned feature, we may GARP for an IP that isn't
> "owned" by the current host.
> 

Given that the feature is opt-in (disabled by default) and relatively
straightforward to backport and also knowing that the workaround
required for this issue in ovn-kubernetes is complex, I'm OK with
backporting this feature.  However, let's give other maintainers a few
days to object if they have concerns.

Regards,
Dumitru

> 
> Thank you,
> 
> Martin Kennelly (Red Hat) 
> 
> 
> *[1] *https://patchwork.ozlabs.org/project/ovn/
> patch/67a5c2813f77c67f6069a3766edaf28982e2f81a.1757022110.git.lorenzo.bianc...@redhat.com/
>  
> <https://patchwork.ozlabs.org/project/ovn/patch/67a5c2813f77c67f6069a3766edaf28982e2f81a.1757022110.git.lorenzo.bianc...@redhat.com/>
> 
> 
> 

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