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Re: [lwip-devel] TCP FIN problem.

From: Kieran Mansley
Subject: Re: [lwip-devel] TCP FIN problem.
Date: Fri, 03 Oct 2008 13:53:44 +0100

On Fri, 2008-10-03 at 13:45 +0100, David Woodhouse wrote:
> On Fri, 2008-10-03 at 13:43 +0100, Kieran Mansley wrote:
> > Can you get a pcap file for this that I can load into wireshark to
> > have a closer look?
> Was just doing that. The ack field in the header is all zeroes. And it
> only happens on a 64-bit build.

The first thing I'd check is if the ACK bit in the TCP header flags is
set, without it the ACK field should have no significance, but I can't
remember off the top of my head whether this flag is mandatory in
connected TCP states or not.


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