From owner-freebsd-net@FreeBSD.ORG  Tue Apr  1 08:29:32 2003
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id E6EF237B401
	for <freebsd-net@freebsd.org>; Tue,  1 Apr 2003 08:29:31 -0800 (PST)
Received: from basie.internet2.edu (basie.internet2.edu [207.75.164.22])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 4031543F75
	for <freebsd-net@freebsd.org>; Tue,  1 Apr 2003 08:29:26 -0800 (PST)
	(envelope-from boote@internet2.edu)
Received: from localhost (localhost.localdomain [127.0.0.1])
	by basie.internet2.edu (Postfix) with ESMTP
	id 27DBF7B4CA; Tue,  1 Apr 2003 11:29:23 -0500 (EST)
Received: from internet2.edu (localhost [127.0.0.1])
	by basie.internet2.edu (Postfix) with ESMTP
	id AEBAF7B4C1; Tue,  1 Apr 2003 11:29:21 -0500 (EST)
Message-ID: <3E89BE61.3EDE4AEF@internet2.edu>
Date: Tue, 01 Apr 2003 09:29:21 -0700
From: "Jeff W. Boote" <boote@internet2.edu>
X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U)
X-Accept-Language: en
MIME-Version: 1.0
To: Hajimu UMEMOTO <ume@mahoroba.org>
References: <20030326134823.A7029@jamaica.grc.nasa.gov>
	<20030327104649.B18679@jamaica.grc.nasa.gov>	<3E838784.F2F4E330@internet2.edu>
	<yge4r5kvfvg.wl%ume@mahoroba.org>	<3E874F6C.A76F99E8@internet2.edu>
	<yge65pyiets.wl%ume@mahoroba.org>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: by AMaViS 0.3.12pre8
cc: freebsd-net@freebsd.org
Subject: Re: FreeBSD 5.0 dual-stack server
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.1
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, 01 Apr 2003 16:29:32 -0000

Hajimu UMEMOTO wrote:
> boote> This seems to contradict the recommendation in RFC 3493 (which I realize
> boote> is only informational)... I've been doing a web search to try and find
> boote> some kind of record for the rational used for making this default to
> boote> v6only. I haven't found anything substantial yet. Does anyone on this
> boote> list know why? (I'm guessing there must be a good reason - and if so, I
> boote> want to make sure I'm dealing with those issues in my applications.)
> 
> Yes, this breakage against RFC2553/3493 is intentional.  Please refer:
> 
>         draft-cmetz-v6ops-v4mapped-api-harmful-00.txt

Thanks!

So... This would mean an application that wanted to be address
independent would have to create a socket for every single wildcard
sockaddr returned from getaddrinfo. And then use select/accept instead
of just accept. That is kind of ugly... But, I guess it does make sense
in the new world of multiple addresses and address families per host.

jeff