Re: [IPsec] Benjamin Kaduk's Yes on draft-ietf-ipsecme-split-dns-14: (with COMMENT)

Michael Richardson <mcr+ietf@sandelman.ca> Tue, 20 November 2018 14:33 UTC

Return-Path: <mcr+ietf@sandelman.ca>
X-Original-To: ipsec@ietfa.amsl.com
Delivered-To: ipsec@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7C94612D4F2 for <ipsec@ietfa.amsl.com>; Tue, 20 Nov 2018 06:33:32 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.2
X-Spam-Level:
X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
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 W6JpXGtpki-C for <ipsec@ietfa.amsl.com>; Tue, 20 Nov 2018 06:33:29 -0800 (PST)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 949F31286E3 for <ipsec@ietf.org>; Tue, 20 Nov 2018 06:33:29 -0800 (PST)
Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id F266920089 for <ipsec@ietf.org>; Tue, 20 Nov 2018 09:33:22 -0500 (EST)
Received: by sandelman.ca (Postfix, from userid 179) id 572B6B56; Tue, 20 Nov 2018 09:33:27 -0500 (EST)
Received: from sandelman.ca (localhost [127.0.0.1]) by sandelman.ca (Postfix) with ESMTP id 544229DB for <ipsec@ietf.org>; Tue, 20 Nov 2018 09:33:27 -0500 (EST)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: "ipsec@ietf.org" <ipsec@ietf.org>
In-Reply-To: <23539.58882.139191.731005@fireball.acr.fi>
References: <154233104861.10051.7593212496190352066.idtracker@ietfa.amsl.com> <SN6PR09MB326474D2688D48194948243BF0DD0@SN6PR09MB3264.namprd09.prod.outlook.com> <alpine.LRH.2.21.1811170111570.1682@bofh.nohats.ca> <23537.18848.15817.35029@fireball.acr.fi> <ef541bed-5ffa-36f8-8539-1b8ff6f3a509@redhat.com> <23539.58882.139191.731005@fireball.acr.fi>
X-Mailer: MH-E 8.6; nmh 1.7+dev; GNU Emacs 24.5.1
X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m<nPbLgmtKK-5dC@#:k
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-="; micalg="pgp-sha256"; protocol="application/pgp-signature"
Date: Tue, 20 Nov 2018 09:33:27 -0500
Message-ID: <4812.1542724407@localhost>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipsec/2GL6Qdo8KL7vnvsuo5kN3vx59FM>
Subject: Re: [IPsec] Benjamin Kaduk's Yes on draft-ietf-ipsecme-split-dns-14: (with COMMENT)
X-BeenThere: ipsec@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Discussion of IPsec protocols <ipsec.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipsec>, <mailto:ipsec-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ipsec/>
List-Post: <mailto:ipsec@ietf.org>
List-Help: <mailto:ipsec-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipsec>, <mailto:ipsec-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 20 Nov 2018 14:33:32 -0000

Tero Kivinen <kivinen@iki.fi> wrote:
    > Presentation format includes things like comments, newlines,
    > whitespace etc.

    > That is the reason I do not like to have presentation format inside
    > the binary wire formats like IKE. We do not need to do string parsing,
    > or regex processing in IKE library, but to properly parse presentation
    > format you need to do that.

+1
For all the reasons you cited.

(Mind, I think split-horizon dns is perpetuation of a bad idea from 1989.
Unrouted IPv6 for internal use has no split-dns needs, so I don't really
care if gateway's will find a way to attack client systems.)

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-