Re: [PATCH net 0/2] Revert advertising the TCP MSS from the configured MTU
From: patchwork-bot+netdevbpf
Date: Wed Oct 28 2026 - 19:10:46 EST
Hello:
This series was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:
On Mon, 26 Oct 2026 15:23:07 +0800 you wrote:
> Commit 2640e6419594 ("net: advertise TCP MSS from the configured MTU,
> not the learned PMTU") breaks TCP for clients behind networks that
> filter inbound ICMP, when the server reaches them through a hop with a
> smaller MTU: the handshake completes, then the connection stalls as
> soon as the client sends full-size segments. This was reported in [1]
> and confirmed on 7.3-rc7; reverting the commit on top of 7.3-rc7 fixes
> it. Details and numbers are in patch 2.
>
> [...]
Here is the summary with links:
- [net,1/2] Revert "selftests: net: packetdrill: add tests for advertised MSS with PMTU exceptions"
https://git.kernel.org/netdev/net/c/b4aac29a21d9
- [net,2/2] Revert "net: advertise TCP MSS from the configured MTU, not the learned PMTU"
https://git.kernel.org/netdev/net/c/564313447e54
You are awesome, thank you!
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