From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: DSCP values in TCP handshake
Date: Mon, 18 Apr 2011 16:05:12 +0200
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References: <loom.20110418T154445-102@post.gmane.org>
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To: Joe Buehler <aspam@cox.net>
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Le lundi 18 avril 2011 =C3=A0 13:48 +0000, Joe Buehler a =C3=A9crit :
> What does the LINUX network code put in the DSCP field of TCP SYN-ACK=
 packets
> that are replies to a SYN connection request?  I have a customer send=
ing SYN
> with 0x2e in the DSCP field but apparently getting DSCP 0x0 in the re=
ply.

The other way (server->client) is depending on application and listener
only.

If it uses a standard socket, standard bind() + listen(), TOS is 0