Michael Tuexen tuexen at freebsd.org
Thu Sep 21 18:47:42 UTC 2017

Dear all,

when FreeBS sends a SYN-ACK, it never sends an MSS larger than the one
received in the SYN. This consideration of the peer's MSS is what the
patch removes.

Personally, I found this neat although not described in an RFC. The
reasoning could be that the client uses its MTU to deduce the MSS
and you make the assumption that this is symmetric.

Best regards

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