IETF Logo Mail Archive

Re: [v6ops] IPv6-Only Preferred DHCPv4 option

Lorenzo Colitti <lorenzo@google.com> Mon, 09 December 2019 15:24 UTC

Return-Path: <lorenzo@google.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 05D5A120233 for <v6ops@ietfa.amsl.com>; Mon, 9 Dec 2019 07:24:39 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -17.5
X-Spam-Level:
X-Spam-Status: No, score=-17.5 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=google.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 pk8AUPC8rlVL for <v6ops@ietfa.amsl.com>; Mon, 9 Dec 2019 07:24:37 -0800 (PST)
Received: from mail-io1-xd36.google.com (mail-io1-xd36.google.com [IPv6:2607:f8b0:4864:20::d36]) (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 26BD2120241 for <v6ops@ietf.org>; Mon, 9 Dec 2019 07:24:37 -0800 (PST)
Received: by mail-io1-xd36.google.com with SMTP id a22so177322ios.3 for <v6ops@ietf.org>; Mon, 09 Dec 2019 07:24:37 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=yMIuemdC0QL/tdQwE4zk3D/1noZv+8grrVgJTDLTb7w=; b=k99+mzfKDted1PD99LAcf21iOT1Hq8BWmtGF6lwQvRnWSnrVrovvM9+ATM5Ngp8f/d 48xlLeW5k3oiVKqx8oNc1GCVdgMiF+EdE/Uh0DhFWd9IyH+EDpvjoTiK6+dOgkpbfHYN x0PdgKjIXRAvqfr7lZTUh8KSwWWBvPsDiBoYt4g2ILcGCgx/BbwNg46s8H1M13BUZ6/7 N6Pq7AsC52jvvhT7mYrQF7vyrmgt4KPrrJgNseJeRiKV65pA+l6Zgudw/dM5tlxZxywo loMINRQ7xEtemoPWg2gCckThJ+iyhdmuAoz7hSe1KdjGM3Qj9vPSDBLvCNsoQUklrBaN lgTw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=yMIuemdC0QL/tdQwE4zk3D/1noZv+8grrVgJTDLTb7w=; b=OkEHcHrimGPnq64WcskKEAnop0BTp4cAsSn/2dAKTax/HcZpROntHC2iw+CHQujQr5 imJ/qp37u/3VcLUCI++MkC0Dl5iZi19r54AZBZFGNIEwuQbfdZyEdEAtQKDjak2a1koN 0qrvkHwLhI1BYSGmCkDmJhWNvdDb+ZQw6kTaVGnRhcMJu/yuSlP255PTnN5vmIMKco9Y qz668eA0xST5EBWv/jxIc1gxVeV1xHeN2UhrULnFwW+p97+Eef8z/frABPHjIavK9zLT cO2acVzPpFSLOMrQXHNJLI6X9E4PcuhkX1zW0qqc651AW+wJKVEAtRmcmFuJ1+BiQO7e xc3Q==
X-Gm-Message-State: APjAAAVDPWKca9QD7tD9JBV9VRpq/hcp1jVKLP2lHVSZfq5iQw2vFCRE ofxs5v6RpDVKP2UG/w+CTUrkv4MJZdWZUpJ+nU0LQA==
X-Google-Smtp-Source: APXvYqzb3DpOR2l1pX7pK3CVbGPIlkrWj042cZvRcTKcwZ32yOhXn7IlPJylQa9pfNLBbPlusGMdwwIwyvxEdG230hA=
X-Received: by 2002:a6b:3105:: with SMTP id j5mr1826203ioa.170.1575905076169; Mon, 09 Dec 2019 07:24:36 -0800 (PST)
MIME-Version: 1.0
References: <F5AAD5B7-22BD-4474-9A1E-1A97AFFE47FC@cisco.com> <1655AE1A-EF2E-4720-BFBE-FA512CC4D240@cisco.com> <85E7ECA2-3538-48D7-99CB-7E978E7C0F03@fugue.com>
In-Reply-To: <85E7ECA2-3538-48D7-99CB-7E978E7C0F03@fugue.com>
From: Lorenzo Colitti <lorenzo@google.com>
Date: Tue, 10 Dec 2019 00:24:24 +0900
Message-ID: <CAKD1Yr1qSV4mzAqP7hNWKHbppQmJ=r-ajdFRfdscfvukhdUf=A@mail.gmail.com>
To: Ted Lemon <mellon@fugue.com>
Cc: "Bernie Volz (volz)" <volz@cisco.com>, V6 Ops List <v6ops@ietf.org>
Content-Type: multipart/alternative; boundary="00000000000044558b059946fe3d"
Archived-At: <https://mailarchive.ietf.org/arch/msg/v6ops/yNikxm7AwBdpzPWs0_P8lwJIg34>
Subject: Re: [v6ops] IPv6-Only Preferred DHCPv4 option
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.29
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, 09 Dec 2019 15:24:39 -0000

On Tue, Dec 10, 2019 at 12:21 AM Ted Lemon <mellon@fugue.com> wrote:

> Perhaps as a middle ground, draft could allow a server to return 0.0.0.0
> as “assigned” address and then client MUST NOT send a DHCPREQUEST.
> But I do not see this as being a requirement.
>
>
> This isn’t a middle ground.  This is (at best) meaningless behavior: a
> hack.   Worse, it could actually cause problems with middleboxes because
> they might try to treat 0.0.0.0 as a real address.   Why are you doing the
> hack?   What is the problem you are trying to prevent by doing the hack?
>

Ted, I'm confused as to what you're proposing. I thought you were
suggesting that the server would send back an OFFER with a yiaddr of
0.0.0.0. Is that not what you mean?

v2.23.0 | Report a Bug | By Email