From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 26 Jan 2001 12:58:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 26 Jan 2001 12:58:43 -0500 Received: from neon-gw.transmeta.com ([209.10.217.66]:5907 "EHLO neon-gw.transmeta.com") by vger.kernel.org with ESMTP id ; Fri, 26 Jan 2001 12:58:32 -0500 Message-ID: <3A71BA7F.9A3E7B03@transmeta.com> Date: Fri, 26 Jan 2001 09:57:19 -0800 From: "H. Peter Anvin" Organization: Transmeta Corporation X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.4.0 i686) X-Accept-Language: en, sv, no, da, es, fr, ja MIME-Version: 1.0 To: "Adam J. Richter" CC: linux-kernel@vger.kernel.org, davem@redhat.com Subject: Re: hotmail not dealing with ECN In-Reply-To: <200101261753.JAA11559@adam.yggdrasil.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Adam J. Richter" wrote: > > I am surprised that anyone is seriously considering denying > service to sites that do not implement an _experimental_ facility > and have firewalls that try to play things safe by dropping packets > which have 1's in bit positions that in the RFC "must be zero." > > If Microsoft were to do this with their favorite experimental > network extensions for msnbc.com, how do you think the non-Microsoft > world would feel and react? Well, that's about how the rest of > the world is likely to view this. > > That said, I wonder if some tweak to the Linux networking > stack is possible whereby it would automatically disable ECN and retry > on per socket basis if the connection establishment otherwise seems to > be timing out. This may be tricky given that the purpose of this > facility is congestion notification, but, if someone is smart enough > to be able to implement this, it would provide a much less disruptive > migration path for adoption across firewalls that drop these packets. > Far more sites could then safely activate this feature without limiting > the hosts that they can reach. > > Adam J. Richter __ ______________ 4880 Stevens Creek Blvd, Suite 104 > adam@yggdrasil.com \ / San Jose, California 95129-1034 > +1 408 261-6630 | g g d r a s i l United States of America > fax +1 408 261-6631 "Free Software For The Rest Of Us." Ummm... we already went over this. The fundamental problem is that they aren't dropping the packets, they are sending RST. -hpa -- at work, in private! "Unix gives you enough rope to shoot yourself in the foot." http://www.zytor.com/~hpa/puzzle.txt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/