Re: New Version Notification for draft-bonica-6man-frag-deprecate-00.txt

Glen Turner <gdt@gdt.id.au> Tue, 25 June 2013 10:17 UTC

Return-Path: <gdt@gdt.id.au>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9C78A21F9EF5 for <ipv6@ietfa.amsl.com>; Tue, 25 Jun 2013 03:17:32 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.6
X-Spam-Level:
X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, NO_RELAYS=-0.001]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id h8SYMxeHgEMt for <ipv6@ietfa.amsl.com>; Tue, 25 Jun 2013 03:17:32 -0700 (PDT)
Received: from neotokyo.gdt.id.au (neotokyo.adelaide.aarnet.edu.au [IPv6:2001:388:4000:4001:ba27:ebff:fed3:9fa1]) by ietfa.amsl.com (Postfix) with ESMTP id 73B8021E808C for <ipv6@ietf.org>; Tue, 25 Jun 2013 03:17:27 -0700 (PDT)
Received: from 2001-44b8-01d2-bb00-3026-e09e-aedb-5a3d.static.ipv6.internode.on.net (2001-44b8-01d2-bb00-3026-e09e-aedb-5a3d.static.ipv6.internode.on.net [IPv6:2001:44b8:1d2:bb00:3026:e09e:aedb:5a3d]) by neotokyo.gdt.id.au (Postfix) with ESMTPSA id E5EE032A076A; Tue, 25 Jun 2013 19:47:21 +0930 (CST)
Date: Tue, 25 Jun 2013 19:47:13 +0930
From: Glen Turner <gdt@gdt.id.au>
To: Bob Hinden <bob.hinden@gmail.com>
Subject: Re: New Version Notification for draft-bonica-6man-frag-deprecate-00.txt
In-Reply-To: <ABCE0528-9694-4A88-9A0C-F681B62227C8@gmail.com>
Message-ID: <alpine.DEB.2.02.1306251938410.23024@ilion>
References: <2CF4CB03E2AA464BA0982EC92A02CE2509F85151@BY2PRD0512MB653.namprd05.prod.outlook.com> <51C56E60.5040009@fud.no> <8C48B86A895913448548E6D15DA7553B9237F3@xmb-rcd-x09.cisco.com> <CAKr6gn17O+B78HJofr-z7Nsgv-y8+w4hgKy+YPicgNS126qwXA@mail.gmail.com> <2CF4CB03E2AA464BA0982EC92A02CE2509F870FC@BY2PRD0512MB653.namprd05.prod.outlook.com> <CAKr6gn2zu2n-pJMirG-seN5WX=Evyquu9EqqLOV-zf-RKQ9eYg@mail.gmail.com> <20130625015317.6B256363BD8F@drugs.dv.isc.org> <2CF4CB03E2AA464BA0982EC92A02CE2509F878B0@BY2PRD0512MB653.namprd05.prod.outlook.com> <EE995320-48D6-4D97-888A-0C2AD5024743@apnic.net> <ABCE0528-9694-4A88-9A0C-F681B62227C8@gmail.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset="US-ASCII"
X-Virus-Scanned: clamav-milter 0.97.8 at neotokyo
X-Virus-Status: Clean
Cc: "ipv6@ietf.org 6man-wg" <ipv6@ietf.org>, Geoff Huston <gih@apnic.net>, Mark Andrews <marka@isc.org>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/ipv6>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 25 Jun 2013 10:17:32 -0000

On Tue, 25 Jun 2013, Bob Hinden wrote:
> I think it would be good to fix this even if we don't deprecate IPv6 fragmentation.

What's this look like on the API side? You pass in a packet. Does the
socket block because there may a packet in parallel (and how does
the mechanism under the API know that)?  Is that better or worse
than fragmentation?

I think that FreeBSD has done the reasonable thing. Given that the API
has accepted the packet it is transmitting it using the most recent
information about the path, rather than transmitting it with high
odds of failure.

-- 
Glen Turner <http://www.gdt.id.au/~gdt/>