Re: [PATCH net-next 2/3] mptcp: fallback to TCP after SYN+MPC drops

From: Eric Dumazet
Date: Wed Sep 11 2024 - 03:41:16 EST


On Mon, Sep 9, 2024 at 10:10 PM Matthieu Baerts (NGI0)
<matttbe@xxxxxxxxxx> wrote:
>
> Some middleboxes might be nasty with MPTCP, and decide to drop packets
> with MPTCP options, instead of just dropping the MPTCP options (or
> letting them pass...).
>
> In this case, it sounds better to fallback to "plain" TCP after 2
> retransmissions, and try again.
>
> Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/477
> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>

Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>