Re: [dhcwg] draft-ietf-dhc-dhcpv6-opt-netboot-05 - how to proceed?

Niall.oReilly+lists@ucd.ie Tue, 20 October 2009 08:11 UTC

Return-Path: <Niall.oReilly+lists@ucd.ie>
X-Original-To: dhcwg@core3.amsl.com
Delivered-To: dhcwg@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id C16623A6768 for <dhcwg@core3.amsl.com>; Tue, 20 Oct 2009 01:11:52 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.599
X-Spam-Level:
X-Spam-Status: No, score=-6.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4]
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 CCP1z1tfwiMu for <dhcwg@core3.amsl.com>; Tue, 20 Oct 2009 01:11:52 -0700 (PDT)
Received: from dakota.ucd.ie (mailhub1.ucd.ie [193.1.169.34]) by core3.amsl.com (Postfix) with ESMTP id F02C03A6767 for <dhcwg@ietf.org>; Tue, 20 Oct 2009 01:11:51 -0700 (PDT)
Received: from conversion-daemon.dakota.ucd.ie by dakota.ucd.ie (Sun Java System Messaging Server 6.2-2.05 (built Apr 28 2005)) id <0KRS00A01Z02PR00@dakota.ucd.ie> (original mail from Niall.oReilly+lists@ucd.ie) for dhcwg@ietf.org; Tue, 20 Oct 2009 09:11:58 +0100 (IST)
Received: from [192.168.0.67] ([82.243.40.40]) by dakota.ucd.ie (Sun Java System Messaging Server 6.2-2.05 (built Apr 28 2005)) with ESMTPSA id <0KRT001D503XK600@dakota.ucd.ie>; Tue, 20 Oct 2009 09:11:58 +0100 (IST)
Date: Tue, 20 Oct 2009 10:11:55 +0200
From: Niall.oReilly+lists@ucd.ie
In-reply-to: <669B95F2-FA8F-47AA-AB8A-4292DDB1A4EF@nominum.com>
To: Ted Lemon <Ted.Lemon@nominum.com>
Message-id: <4ADD70CB.2080409@ucd.ie>
Organization: University College Dublin IT Services
MIME-version: 1.0
Content-type: text/plain; format="flowed"; charset="UTF-8"
Content-transfer-encoding: 7bit
References: <200910062234.AAA07005@TR-Sys.de> <AD61797F-DB2D-4889-8888-5339521ADE8F@nominum.com> <OF029AB4A7.6EEA954A-ONC125764B.004E95CE-C125764B.00536F30@de.ibm.com> <FBD14811-7C9A-4FCB-8707-071A7CA12B96@nominum.com> <OF73909874.9B93FADE-ONC1257653.002E96C8-C1257653.00302A9F@de.ibm.com> <589F59F0-3E17-44FF-8918-FED51F03EE4D@nominum.com> <4ADC156D.1070709@ucd.ie> <669B95F2-FA8F-47AA-AB8A-4292DDB1A4EF@nominum.com>
User-Agent: Thunderbird 2.0.0.23 (X11/20090817)
Cc: "dhcwg@ietf.org" <dhcwg@ietf.org>, Thomas Huth <THUTH@de.ibm.com>
Subject: Re: [dhcwg] draft-ietf-dhc-dhcpv6-opt-netboot-05 - how to proceed?
X-BeenThere: dhcwg@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: <dhcwg.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/dhcwg>, <mailto:dhcwg-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dhcwg>
List-Post: <mailto:dhcwg@ietf.org>
List-Help: <mailto:dhcwg-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dhcwg>, <mailto:dhcwg-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 20 Oct 2009 08:11:52 -0000

Ted Lemon wrote:
> On Oct 19, 2009, at 12:29 AM, Niall.oReilly+lists@ucd.ie wrote:
>>     Don't you mean load scattering (rather than balancing),
>>     or am I missing something?
> 
> Try looking up the A record on a name with three different A records, 
> three different times, and notice how the ordering changes.

	I know. Unless the nameserver has custom policy tuning, I'll
	probably get three different permutations of the records.

	It's quite a leap from there to what you claimed.

Ted Lemon wrote:
 > [...] DNS already
 > specifies a load balancing mechanism for names that return multiple
 > A or AAAA records.

	The online version of the (4th edition of the) "Cricket book"
	points out, "Note that this is really load distribution, not
	load balancing [...]".

	I'm not aware of any DNS-related RFC which "specifies a
	load-balancing mechanism".


	Best regards

	Niall O'Reilly