IETF Logo Mail Archive

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

Brian E Carpenter <brian.e.carpenter@gmail.com> Sat, 29 June 2013 04:19 UTC

Return-Path: <brian.e.carpenter@gmail.com>
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 266B021F9E38 for <ipv6@ietfa.amsl.com>; Fri, 28 Jun 2013 21:19:59 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -101.772
X-Spam-Level:
X-Spam-Status: No, score=-101.772 tagged_above=-999 required=5 tests=[AWL=-0.413, BAYES_00=-2.599, SARE_LWSHORTT=1.24, USER_IN_WHITELIST=-100]
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 wb4d3AWfzm2A for <ipv6@ietfa.amsl.com>; Fri, 28 Jun 2013 21:19:58 -0700 (PDT)
Received: from mail-pb0-x233.google.com (mail-pb0-x233.google.com [IPv6:2607:f8b0:400e:c01::233]) by ietfa.amsl.com (Postfix) with ESMTP id C2B1921F9E36 for <ipv6@ietf.org>; Fri, 28 Jun 2013 21:19:58 -0700 (PDT)
Received: by mail-pb0-f51.google.com with SMTP id um15so2935457pbc.38 for <ipv6@ietf.org>; Fri, 28 Jun 2013 21:19:58 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:organization:user-agent:mime-version:to:cc :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=TxtFefZ0EwlKnjJ9Yw4yrK0uy2BiO9zu7a6T68hbG3g=; b=xth2mNrkDboDVUkBAIlKIH1xmL8BNiigu0ssQR7pLaeI9isefXtWwXCY1O2lDXhzi8 dyhq1URxaaujzkEv60cJCY+G5dQXRpt8KwgJGFK2JR2keZepBo9XeUlnSGHgP1Zvf/cV CmsOBfE/V8ynTpYHU/lDof4dURyJiRTdzcYBMswykZLhb8eiiE7610pUNyNymA187giB SjNtC3n2pRVQo+EEr0cwXXLGCpBLWwTzZ/pIwge2fmiUBzC/yTNjGr44FmgAlhB4bt9c B03YGTty2QNDRE7R0TkdTQP/EboA2yK1TykclX4eSu47SOURCiWjYL/K+2UVOS4jLrJJ rnuQ==
X-Received: by 10.66.163.130 with SMTP id yi2mr14287662pab.7.1372479598457; Fri, 28 Jun 2013 21:19:58 -0700 (PDT)
Received: from [192.168.178.22] (10.198.69.111.dynamic.snap.net.nz. [111.69.198.10]) by mx.google.com with ESMTPSA id oy10sm12005562pac.9.2013.06.28.21.19.55 for <multiple recipients> (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 28 Jun 2013 21:19:57 -0700 (PDT)
Message-ID: <51CE6079.7060205@gmail.com>
Date: Sat, 29 Jun 2013 16:20:09 +1200
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
User-Agent: Thunderbird 2.0.0.6 (Windows/20070728)
MIME-Version: 1.0
To: "Templin, Fred L" <Fred.L.Templin@boeing.com>
Subject: Re: New Version Notification for draft-bonica-6man-frag-deprecate-00.txt
References: <2CF4CB03E2AA464BA0982EC92A02CE2509F85151@BY2PRD0512MB653.namprd05.prod.outlook.com> <51C32FA9.1090207@gmail.com> <2CF4CB03E2AA464BA0982EC92A02CE2509F85F38@BY2PRD0512MB653.namprd05.prod.outlook.com> <20130624204008.GB3647@virgo.local> <20130624205226.GC3647@virgo.local> <2CF4CB03E2AA464BA0982EC92A02CE2509F8761C@BY2PRD0512MB653.namprd05.prod.outlook.com> <51C902DC.9000408@gmail.com> <m24ncmaozs.wl%randy@psg.com> <2EA20F89-02F5-4D06-90EE-A7D2974045A3@employees.org> <m2li5yj7u3.wl%randy@psg.com> <3B0D9447-D39F-4165-9B43-019C3513101A@employees.org> <m2ip12j6d9.wl%randy@psg.com> <A0662700-628E-4032-89ED-6621B0867820@apple.com> <51CA2C56.1080809@gmail.com> <CAKC-DJjw+3jSuf7SRnEY6c-1sCbJgdf40cRZnDs4ZvAPaEDQWA@mail.gmail.com> <BF5BEF74-56C7-470D-9132-95EA0F0284F7@apple.com> <51CDF8BF.6060002@gmail.com> <2134F8430051B64F815C691A62D983180B00B6@XCH-BLV-504.nw.nos.boeing.com> <51CE0D90.7090007@gmail.com> <2134F8430051B64F815C691A62D983180B02A3@XCH-BLV-504.nw.nos.boeing.com>
In-Reply-To: <2134F8430051B64F815C691A62D983180B02A3@XCH-BLV-504.nw.nos.boeing.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Cc: 6man <ipv6@ietf.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: Sat, 29 Jun 2013 04:19:59 -0000

On one point...


On 29/06/2013 10:44, Templin, Fred L wrote:
...
>> and (b) accepting that strapping the MTU at 1280 is
>> a reasonable short term policy. If (a) progressively pervades
>> the installed base then (b) can be dropped as the years go by.
> 
> Once a link sets a 1280 MTU, how will it know that it is now
> safe to increase the MTU? And, once set, how can we expect
> operators to go back and re-set in the future. IMHO, strapping
> the MTU to 1280 everywhere now would become ossified long into
> the future.

It would certainly take years, but I think the end result would be
implementors raising the default to the real link MTU, one stack
at a time. I don't think you find many IPv4 stacks today with
the MTU set low by default.

    Brian

v2.23.0 | Report a Bug | By Email