IETF Logo Mail Archive

Re: Comments on draft-fz-6man-ipv6-alt-mark-09

Brian E Carpenter <brian.e.carpenter@gmail.com> Tue, 19 May 2020 02:39 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 D3A4A3A10C9 for <ipv6@ietfa.amsl.com>; Mon, 18 May 2020 19:39:33 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -0.199
X-Spam-Level:
X-Spam-Status: No, score=-0.199 tagged_above=-999 required=5 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
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 WHTYUot8lLuH for <ipv6@ietfa.amsl.com>; Mon, 18 May 2020 19:39:32 -0700 (PDT)
Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) (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 E56003A10C7 for <6man@ietf.org>; Mon, 18 May 2020 19:39:32 -0700 (PDT)
Received: by mail-pl1-x62f.google.com with SMTP id m7so5018566plt.5 for <6man@ietf.org>; Mon, 18 May 2020 19:39:32 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=GSWKA84gRcdC8ZOG5n7LDiOmOye8IncIxnryGSoGIUk=; b=AImHVVgQekSJIGLx77hT04Pmc1OocYCSvxW9U5ZFK8T04UAJhx5zs2Jtrmlr1XJFy0 p2zX3HqRrKVjHOhNVW38j6YTxHacesa990equ3iCKURhz2iCf2ZFPrvSAzM5Z/ZT4xK6 XeDl4QfuaYLthl1hVvvSkvCtsfXNd2kMaAcsjLse7KBQmHwaBlIGB6rRtVOSU5AOGi01 u1pcNY4QXrLwZBJAadhiOqYB6FcI3QmPwM02VTNMVHLP28zSvVO8t0pNyokHPuH1Lnar qpfNJ5bwNQ9SiDQzB6Np3gxfbSh9Cfh1hlUfsEtuiXHLJGApaVIYmTFQzAe+pxX6vwCo f5MA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=GSWKA84gRcdC8ZOG5n7LDiOmOye8IncIxnryGSoGIUk=; b=bhNgxIY/cf97njN7hFJVgNnWZUuSDYWECFNjdH1hWwqNOFXQ+CbH/zhF39Ua75Ep7Y eFiGhhbIw9TBSQgamRVPCrb0/5PC/iOSM7PJa4vxneLop0Y06WTV+qxaZbyyoivU5/7S DbxEOSk2Rao9RKylhQhuDa/Gd6bu08cqoHNon/VHqmG2s0yMKKY/TB92bMwBJES6E34v u3baKUPzrolpt1sbdtmC3zIdvvtfjaKzop8fmPeLLs/B6tKHK2DHr5z145xu33kBGUeo nVIzu1wioOdG3LbiC5nkvLtSsYKOVRYEtYI7UlS5fbxOSngp2n/epPhfeofAZF5ZoyaI PDig==
X-Gm-Message-State: AOAM532uZDLiEUPBfhga2Vxb/qETspjXTM/PxN+7bAg1psiSmONkeIBl pffryW/rySENbHaAuUwCb3e/5uEu
X-Google-Smtp-Source: ABdhPJyntOYNsjTOQQHS+2qW3pQ23cnXnsoNCMt96X7GDthfFTd1e3hTu29xXHN1EQRgweK3KWJBOg==
X-Received: by 2002:a17:90a:e2cb:: with SMTP id fr11mr2743419pjb.72.1589855971843; Mon, 18 May 2020 19:39:31 -0700 (PDT)
Received: from [192.168.178.30] ([165.84.12.178]) by smtp.gmail.com with ESMTPSA id y22sm3740019pfc.132.2020.05.18.19.39.29 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 May 2020 19:39:31 -0700 (PDT)
Subject: Re: Comments on draft-fz-6man-ipv6-alt-mark-09
To: Tom Herbert <tom@herbertland.com>, 6MAN <6man@ietf.org>
References: <CALx6S35bWVkTWcbdOt-HA-9XbH4WwRsTyaUdDA5q4rUNJvNNiw@mail.gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Message-ID: <da6e0d76-915b-a7da-8744-2f3761b43a98@gmail.com>
Date: Tue, 19 May 2020 14:39:27 +1200
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1
MIME-Version: 1.0
In-Reply-To: <CALx6S35bWVkTWcbdOt-HA-9XbH4WwRsTyaUdDA5q4rUNJvNNiw@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/cwAAnq9HdiZZgApJs4DLxMeyMsM>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.29
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: <https://mailarchive.ietf.org/arch/browse/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, 19 May 2020 02:39:34 -0000

Tom,

> It's unclear to me how the FlowMonID is set, how it's used, and why
> the Flow Label isn't sufficient for this purpose.

That was proposed by the authors and discarded a long time ago, because
the usage was incompatible with RFC6437. I can't remember the details
without looking up long-expired drafts and old email. But generally:
you can't encode semantics in conformant flow labels, because they are
pseudo-random.

Regards
   Brian

v2.23.0 | Report a Bug | By Email