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Date:      Fri, 19 Jun 2009 17:27:29 -0400 (EDT)
From:      Garrett Wollman <wollman@hergotha.csail.mit.edu>
To:        andre@freebsd.org
Cc:        net@freebsd.org
Subject:   Re: TCP bug?
Message-ID:  <200906192127.n5JLRTtE042617@hergotha.csail.mit.edu>
In-Reply-To: <4A3BF2DF.6080603@freebsd.org>
References:  <20090619191756.R581@beagle.kn.op.dlr.de>

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In article <4A3BF2DF.6080603@freebsd.org>, Andre writes:

>2) in old T/TCP (RFC1644) which we supported in our TCP code the SYN/FIN
>    combination was a valid one, though not directly intended for SYN/ACK/FIN.

It still is valid, and should be possible to generate using sendmsg()
and MSG_EOF.  Nothing about this depends on T/TCP, which is solely
about reducing the three-way handshake to a two-way handshake.

-GAWollman



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