Re: [v6ops] IANA assigned prefix for IPv6 benchmarking

james woodyatt <jhw@nestlabs.com> Mon, 27 July 2015 18:20 UTC

Return-Path: <jhw@nestlabs.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4F7AF1B3177 for <v6ops@ietfa.amsl.com>; Mon, 27 Jul 2015 11:20:38 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.001
X-Spam-Level:
X-Spam-Status: No, score=-2.001 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, SPF_PASS=-0.001] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 59v_hfTGXtYV for <v6ops@ietfa.amsl.com>; Mon, 27 Jul 2015 11:20:37 -0700 (PDT)
Received: from mail-pd0-x22b.google.com (mail-pd0-x22b.google.com [IPv6:2607:f8b0:400e:c02::22b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 17D8C1AC44E for <v6ops@ietf.org>; Mon, 27 Jul 2015 11:20:37 -0700 (PDT)
Received: by pdbnt7 with SMTP id nt7so55888056pdb.0 for <v6ops@ietf.org>; Mon, 27 Jul 2015 11:20:36 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nestlabs.com; s=google; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=C8Cj+gzsBm534TJNfMCjkrmzdqVpQj8G3T8dGUe1gts=; b=cQF3RpvT3S7em+MjuF17bYrljlL8UhWYGwR5PTs+NER/d+BZ7M5e1Rh4TqkVRPwmZ+ 4GQhfw93XooMN3ODzu/eCClRl1MIcCD6AxoyR3zo+OIHJP4mROj9rkU00zfpnfvtFrQQ wUJRkspgyThB1I+GcYCLdF2UKL1BoBDLX3Bso=
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:content-type:mime-version:subject:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to; bh=C8Cj+gzsBm534TJNfMCjkrmzdqVpQj8G3T8dGUe1gts=; b=I5CYy5bsMTCiY5H49Iae5DK6vsI6FRmI3I79RizkuaUoCXjh1wU/7t6zNIuS2vliTt F+4POTxn1eMKTSnLv+qeXWuKQib92CA0SmDFiXzq+jnfTqr7dumjDN4WhOBIzo6J6EYH BN48TnztBUE2plj8qOSszm+U5ZOroldDwKHK7rog5TJY1UxHkqXhPS991PFkc2qOsymA wW8PheBETFW2tM6cHNwUdxTtwDthBqhfKjetR72l/Dlw5WVWyIPJPSx6t+RP/ImrPgSl V9jgjhLWaUmJQ3GRzV1F9cw66brh2azvtIocdAeOxN70Y7/wmwkVmmVPIJZ1cb24ZeJM 6yZA==
X-Gm-Message-State: ALoCoQnSN+QzDpvVRqSOw96D494f9zekGqztaDTLPPxfn8GO4YmNwwQXNhq5T+UXmRSxRrJHuYFZkdiVdf8HKLOVR3PFuOaTPdB4YeM/EC3UyaVw0Hi0+Rw0as9hvLcBxlPktvadWSCKpxRRuLB3oAL3WX6tehE0MksK1Ol36hTZTmucQZQzOCM=
X-Received: by 10.70.1.102 with SMTP id 6mr70733732pdl.32.1438021236727; Mon, 27 Jul 2015 11:20:36 -0700 (PDT)
Received: from ?IPv6:2620::10e7:4:8122:7821:9eb:985e? ([2620:0:10e7:4:8122:7821:9eb:985e]) by smtp.gmail.com with ESMTPSA id f4sm30681534pdc.95.2015.07.27.11.20.35 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 27 Jul 2015 11:20:35 -0700 (PDT)
Content-Type: text/plain; charset=utf-8
Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2102\))
From: james woodyatt <jhw@nestlabs.com>
In-Reply-To: <CAAedzxqK=tmVk0kQxF+FtmXPR68=faG8qadGgk6YpN95GGafUA@mail.gmail.com>
Date: Mon, 27 Jul 2015 20:20:33 +0200
Content-Transfer-Encoding: quoted-printable
Message-Id: <122EB753-12C2-4F4C-B9F9-BFA154FE803A@nestlabs.com>
References: <6b60e612c4f0.55b20091@naist.jp> <6c008406e2af.55b200cf@naist.jp> <6c00eec89ab8.55b2010d@naist.jp> <6bf095d99dae.55b2014a@naist.jp> <6b50ff96a9ad.55b20188@naist.jp> <6c50a92cde54.55b201c6@naist.jp> <6c50be138e83.55b20205@naist.jp> <6bf08db1e13f.55b20243@naist.jp> <6bf0f7dbdadf.55b20280@naist.jp> <6bf0898ffbd5.55b21ea8@naist.jp> <55B29026.1070906@gmail.com> <6b70d3cfd2f6.55b365ea@naist.jp> <6b70bfbf8107.55b36628@naist.jp> <6c30a2fefa4c.55b36666@naist.jp> <6c50d867e570.55b366a4@naist.jp> <6bf0c04ef47e.55b382fb@naist.jp> <55B48402.1040202@gmail.com> <CAAedzxqK=tmVk0kQxF+FtmXPR68=faG8qadGgk6YpN95GGafUA@mail.gmail.com>
To: "v6ops@ietf.org" <v6ops@ietf.org>
X-Mailer: Apple Mail (2.2102)
Archived-At: <http://mailarchive.ietf.org/arch/msg/v6ops/OuV6O5peHv-8mWaiPVrnsr22Qqs>
Subject: Re: [v6ops] IANA assigned prefix for IPv6 benchmarking
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/v6ops/>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 27 Jul 2015 18:20:38 -0000

On Jul 26, 2015, at 18:22, Erik Kline <ek@google.com> wrote:
> 
> […]
> If, for instance, *every time a NAT64 test network was started* a new
> random ULA was generated or, say, 2001:2:0:$RAND16::/64 were used,
> then developers would be less likely to accidentally make assumptions
> about the consistency of addresses.

I think it would be better not to use a single constant network prefix for the purpose Stuart described. The reason is that Stable and Opaque IIDs with SLAAC [RFC 7217] will never change on such networks. For the testing purpose Apple has in mind, I think it would be better to use a /48 prefix with a subnet that can be chosen as a configuration option in the Sharing preferences.

—james