From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 27 Jan 2001 05:00:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 27 Jan 2001 05:00:26 -0500 Received: from 13dyn73.delft.casema.net ([212.64.76.73]:30729 "EHLO abraracourcix.bitwizard.nl") by vger.kernel.org with ESMTP id ; Sat, 27 Jan 2001 05:00:20 -0500 Message-Id: <200101271000.LAA22442@cave.bitwizard.nl> Subject: Re: hotmail not dealing with ECN In-Reply-To: <3A70D7B2.F8C5F67C@transmeta.com> from "H. Peter Anvin" at "Jan 25, 2001 05:49:38 pm" To: "H. Peter Anvin" Date: Sat, 27 Jan 2001 11:00:15 +0100 (MET) CC: "David S. Miller" , linux-kernel@vger.kernel.org From: R.E.Wolff@BitWizard.nl (Rogier Wolff) X-Mailer: ELM [version 2.4ME+ PL60 (25)] MIME-Version: 1.0 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 H. Peter Anvin wrote: > "David S. Miller" wrote: > > > > H. Peter Anvin writes: > > > Last I communicated with them, I looked for a reference like that in the > > > standards RFCs so I could quote chapter and verse at the Hotmail people, > > > but I couldn't find it. > > > > RFC793, where is lists the unused flag bits as "reserved". > > That is pretty clear to me. It just has to say that > > they are reserved, and that is what it does. > > > > Is the definition of "reserved" defined anywhere? In a lot of specs, > "reserved" means MBZ. MBZ? Must Be Zero? Reserved means MBZ on things you generate, to guarantee you'll get expected behaviour from the other side. But in no circumstance should a reserved bit being non-zero confuse you. They should be ignored. That leads to the "new" implementations knowing what the old implementations will do. Roger. -- ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555 ** *-- BitWizard writes Linux device drivers for any device you may have! --* * There are old pilots, and there are bold pilots. * There are also old, bald pilots. - 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/