From owner-freebsd-net@FreeBSD.ORG  Tue Sep  4 19:26:13 2007
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 093B016A41A
	for <freebsd-net@freebsd.org>; Tue,  4 Sep 2007 19:26:13 +0000 (UTC)
	(envelope-from bms@FreeBSD.org)
Received: from out2.smtp.messagingengine.com (out2.smtp.messagingengine.com
	[66.111.4.26]) by mx1.freebsd.org (Postfix) with ESMTP id D33A413C442
	for <freebsd-net@freebsd.org>; Tue,  4 Sep 2007 19:26:12 +0000 (UTC)
	(envelope-from bms@FreeBSD.org)
Received: from compute1.internal (compute1.internal [10.202.2.41])
	by out1.messagingengine.com (Postfix) with ESMTP id 7128E270E3;
	Tue,  4 Sep 2007 15:26:12 -0400 (EDT)
Received: from heartbeat2.messagingengine.com ([10.202.2.161])
	by compute1.internal (MEProxy); Tue, 04 Sep 2007 15:26:12 -0400
X-Sasl-enc: BVEE+jQ2u8VEpk7axdheUMR3slRhzSqxSDby+UGWvycZ 1188933972
Received: from empiric.lon.incunabulum.net
	(82-35-112-254.cable.ubr07.dals.blueyonder.co.uk [82.35.112.254])
	by mail.messagingengine.com (Postfix) with ESMTP id D8F5B17806;
	Tue,  4 Sep 2007 15:26:11 -0400 (EDT)
Message-ID: <46DDB153.6040909@FreeBSD.org>
Date: Tue, 04 Sep 2007 20:26:11 +0100
From: "Bruce M. Simpson" <bms@FreeBSD.org>
User-Agent: Thunderbird 2.0.0.4 (X11/20070630)
MIME-Version: 1.0
To: Rui Paulo <rpaulo@fnop.net>
References: <46DCB831.3030207@fnop.net> <46DD59F9.1080107@freebsd.org>
	<46DDA265.2090500@fnop.net>
In-Reply-To: <46DDA265.2090500@fnop.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-net@freebsd.org, Andre Oppermann <andre@freebsd.org>
Subject: Re: Killing IPTOS_CE and IPTOS_ECT
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 04 Sep 2007 19:26:13 -0000

Rui Paulo wrote:
> Well, I was asking for comments regarding on the usage of these flags. 
> I was hoping to commit ip.h along with TCP ECN.
>
> This doesn't really need to be before the branch, I think.

Looks fine to me. ECN would be a useful feature to have. AFAIK nothing 
else uses these flags.

Although I do remember it being possible to fingerprint Solaris boxes 
based on their response to the ECN Echo, this was around 6 years ago.

I second Andre's request for a full unified diff if you want it to go in 
ASAP.

regards,
BMS