IETF Logo Mail Archive

Re: [dnsext] Re: I-D ACTION:draft-vandergaast-edns-client-ip-00.txt

Paul Vixie <vixie@isc.org> Thu, 28 January 2010 21:46 UTC

Return-Path: <owner-namedroppers@ops.ietf.org>
X-Original-To: ietfarch-dnsext-archive@core3.amsl.com
Delivered-To: ietfarch-dnsext-archive@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id A82803A6844; Thu, 28 Jan 2010 13:46:53 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -106.269
X-Spam-Level:
X-Spam-Status: No, score=-106.269 tagged_above=-999 required=5 tests=[AWL=-0.270, BAYES_00=-2.599, J_CHICKENPOX_13=0.6, RCVD_IN_DNSWL_MED=-4, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ka2vfYoDaIaB; Thu, 28 Jan 2010 13:46:52 -0800 (PST)
Received: from psg.com (psg.com [147.28.0.62]) by core3.amsl.com (Postfix) with ESMTP id B2F143A677C; Thu, 28 Jan 2010 13:46:52 -0800 (PST)
Received: from majordom by psg.com with local (Exim 4.71 (FreeBSD)) (envelope-from <owner-namedroppers@ops.ietf.org>) id 1Nac6w-0009dY-Ft for namedroppers-data0@psg.com; Thu, 28 Jan 2010 21:41:10 +0000
Received: from [2001:4f8:3:bb:230:48ff:fe5a:2f38] (helo=nsa.vix.com) by psg.com with esmtps (TLSv1:CAMELLIA256-SHA:256) (Exim 4.71 (FreeBSD)) (envelope-from <vixie@vix.com>) id 1Nac6u-0009dJ-75 for namedroppers@ops.ietf.org; Thu, 28 Jan 2010 21:41:08 +0000
Received: from nsa.vix.com (localhost [127.0.0.1]) by nsa.vix.com (Postfix) with ESMTP id A3EDCA7201 for <namedroppers@ops.ietf.org>; Thu, 28 Jan 2010 21:41:07 +0000 (UTC) (envelope-from vixie@nsa.vix.com)
From: Paul Vixie <vixie@isc.org>
To: namedroppers@ops.ietf.org
Subject: Re: [dnsext] Re: I-D ACTION:draft-vandergaast-edns-client-ip-00.txt
In-Reply-To: Your message of "Thu\, 28 Jan 2010 21\:11\:20 GMT." <6f5b6fe71001281311g6e1fdd05o84ba64837813a6fd@mail.gmail.com>
References: <7c31c8cc1001271556w4918093er6e94e07cb92c4dc4@mail.gmail.com> <6184.1264657589@nsa.vix.com> <4966825a1001280807i768a33ccs98f809366bce33d8@mail.gmail.com> <48894.1264695230@nsa.vix.com> <50A91B20-5AC1-4819-91ED-E5141F068D48@wiggum.com> <52065.1264699087@nsa.vix.com> <FDD5D1103B8EA4D13C4A2C4C@Ximines.local> <EEAAE4BF-BBA9-4141-BECC-A8440715597F@icsi.berkeley.edu> <58729.1264707908@nsa.vix.com> <6f5b6fe71001281311g6e1fdd05o84ba64837813a6fd@mail.gmail.com>
X-Mailer: MH-E 8.1; nil; GNU Emacs 22.2.1
MIME-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Date: Thu, 28 Jan 2010 21:41:07 +0000
Message-ID: <64415.1264714867@nsa.vix.com>
Sender: owner-namedroppers@ops.ietf.org
Precedence: bulk
List-ID: <namedroppers.ops.ietf.org>
List-Unsubscribe: To unsubscribe send a message to namedroppers-request@ops.ietf.org with
List-Unsubscribe: the word 'unsubscribe' in a single line as the message text body.
List-Archive: <http://ops.ietf.org/lists/namedroppers/>

> Date: Thu, 28 Jan 2010 21:11:20 +0000
> From: Colm MacCárthaigh <colm@allcosts.net>
> 
> Can you expand upon the "less well" ?

i can't.  i've been told that because of stupid dns tricks, youtube sucks
for people whose recursive dns doesn't share fate and path with their tcp
stack.  i'm just parroting what i've been told, without understanding.  but
apparently this is the raison e'tre for the "client-ip" option so it's
likely true.

> > this incoherency should be dealt with more harshly, perhaps by
> > minimizing TTL to 5 minutes, and sharing a single DNS cache across
> > global providers.
> 
> Why?

because i like caching, and because i don't think the dns q-tuple should be
expanded to include more elements.  because dns is a phat target for folks
whose business models require cost-shifting from their edge to our middle.
oh hell, i said all this in the acm queue article:

http://queue.acm.org/detail.cfm?id=1647302

and since i mentioned q-tuple complexity, see also:

http://queue.acm.org/detail.cfm?id=1242499

v2.23.0 | Report a Bug | By Email