Re: [PATCH net] udp: resubmit encap packets for secondary mcast sockets

[Mariano Baragiola]

On Fri, Sep 18, 2026 at 9:21 AM Kuniyuki Iwashima <kuniyu@xxxxxxxxxx> wrote:
> Did you see a real problem or is this triggered by an AI report?
>
> https://lore.kernel.org/netdev/20260415203624.4057135-1-kuniyu@xxxxxxxxxx/

Hi Kuniyuki,

To be completely transparent: this was identified during a code audit following commit 3cb8d4b9bfeb, not from a production crash report.

I recognize that standard FOU configurations do not typically have multiple listeners on the same port (returning -EADDRINUSE), so this primarily affects multi-socket/SO_REUSEPORT encapsulation scenarios. If you consider this an edge case not worth touching, I am completely fine dropping the patch.

Thanks,
Mariano