Date: Mon, 22 Nov 2004 14:18:52 +0100 From: Daniel Hartmeier <daniel@benzedrine.cx> To: Pawel Worach <pawel.worach@telia.com> Cc: freebsd-net@freebsd.org Subject: Re: SACK (and PF) wierdness Message-ID: <20041122131851.GA14128@insomnia.benzedrine.cx> In-Reply-To: <41A0F1EF.7020804@telia.com> References: <419EBE2E.9080108@telia.com> <200411212028.15015.max@love2party.net> <41A0F1EF.7020804@telia.com>
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Pawel, could you provide a tcpdump -nvvvSXpi <if> for an entire connection, from handshake to the point where it stalls? Please include the corresponding 'BAD state'/'State failure' messages and output of pfctl -vvss related to the connection (ideally all for the same connection, so timestamps are comparable). If the output is too long to post here, put it on a web server and post the URL, or mail the dump to Max and me privately. It does look like one peer is violating the other's window by sending too much data before acknowledgement. The state has picked up on the window scaling, so we need to see the entire TCP connection to determine whether the packet is dropped correctly or not. Daniel
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