From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <hannes@stressinduktion.org>
Received: from order.stressinduktion.org (order.stressinduktion.org
	[87.106.68.36])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(Client CN "order.stressinduktion.org",
	Issuer "order.stressinduktion.org" (not verified))
	by huchra.bufferbloat.net (Postfix) with ESMTPS id 5BAEB208AD4
	for <bloat@lists.bufferbloat.net>; Mon, 31 Dec 2012 09:37:37 -0800 (PST)
Received: by order.stressinduktion.org (Postfix, from userid 500)
	id 3556B1A0CD41; Mon, 31 Dec 2012 18:37:29 +0100 (CET)
Date: Mon, 31 Dec 2012 18:37:29 +0100
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
To: Michael Richardson <mcr@sandelman.ca>
Message-ID: <20121231173729.GB11700@order.stressinduktion.org>
References: <20121227023728.GB19548@order.stressinduktion.org>
	<18172.1356584697@sandelman.ca>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: <18172.1356584697@sandelman.ca>
Cc: bloat@lists.bufferbloat.net
Subject: Re: [Bloat] enabling outgoing tcp-ecn by default for ipv6 links
X-BeenThere: bloat@lists.bufferbloat.net
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: General list for discussing Bufferbloat <bloat.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/bloat>,
	<mailto:bloat-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/bloat>
List-Post: <mailto:bloat@lists.bufferbloat.net>
List-Help: <mailto:bloat-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/bloat>,
	<mailto:bloat-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Mon, 31 Dec 2012 17:37:37 -0000

Hello!

On Thu, Dec 27, 2012 at 12:04:57AM -0500, Michael Richardson wrote:
> >>>>> "Hannes" == Hannes Frederic Sowa <hannes@stressinduktion.org> writes:
>     Hannes> I am thinking about advancing the ipv4/tcp_ecn knob in linux to
>     Hannes> distinguish between ipv4 and ipv6 transport and enable ecn signaling
>     Hannes> on outgoing ipv6 connections by default (for me, at least). I am
>     Hannes> currently doing so with the help of iptables (echo 1 > tcp_ecn and -j
>     Hannes> ECN --ecn-tcp-remove).
> 
> I think it's definitely worth splitting the sysctl, so that we can at
> least learn if it can fly in v6 land.  I'd turn it on.

I had some spare time and posted a patch:
<http://article.gmane.org/gmane.linux.network/253691>

> I suggest that doing this without a way to report on a path/IP/vendor
> that is screwing things up is a mistake.
> 
> http://urchin.earth.li/ecn/
> 
> went inactive again in 2011.

Will look into this now.

Greetings,

  Hannes