Re: [DNSOP] [Ext] I-D Action: draft-ietf-dnsop-svcb-https-05.txt

Brian Dickson <brian.peter.dickson@gmail.com> Tue, 11 May 2021 23:28 UTC

Return-Path: <brian.peter.dickson@gmail.com>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 78B783A2A9A for <dnsop@ietfa.amsl.com>; Tue, 11 May 2021 16:28:15 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.098
X-Spam-Level:
X-Spam-Status: No, score=-2.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 obcKkbNn59Dt for <dnsop@ietfa.amsl.com>; Tue, 11 May 2021 16:28:14 -0700 (PDT)
Received: from mail-lf1-x135.google.com (mail-lf1-x135.google.com [IPv6:2a00:1450:4864:20::135]) (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 9D3B43A2A9C for <dnsop@ietf.org>; Tue, 11 May 2021 16:28:13 -0700 (PDT)
Received: by mail-lf1-x135.google.com with SMTP id x19so31079666lfa.2 for <dnsop@ietf.org>; Tue, 11 May 2021 16:28:13 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=vSMzRmfBnvslIhBbUxAtMZHmHDOaNU2w1TRqHfuqeXY=; b=gr8CvHuCRgv7v5FpiVuSHR2ySikW6iV8TtPerhBbbeKcSwwUlGaZhrX+CCclxmHrsR aWN1bKOjmeHI+UIi9p1bi0pkpiNain+k4IpHPSqJ4vVeM6/0VrWy6RzLdsTSYTuoGdCP n3gSbupztWN3f1lmGplYMBcRjwxbXbKGmZRLgGEx0Fpk5m9zBzO4iENru/MUPuh0nr6H uww+TykVHeCBK5ALrDRXTzCOn1T+u9fHrlQgkrgOxShjMOgkzQoMDJ/KVAQVArE119H+ bzRwKkIpPNVRysP3v6AIiQoqZdWJBgqcOoTmeGagkaT+FuoxMKs48x1WN3laSwhMc0Uz V8Ww==
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=vSMzRmfBnvslIhBbUxAtMZHmHDOaNU2w1TRqHfuqeXY=; b=MkXwNoA7/dzp0UL42MECX2lU6OpSUrER9qYboAflhVrV/HGumRxXqXpPfwBAjMQjpC b27OK9r/Ic2c85FW7tN/5uDeeExA2YJd794ogp8irYFmWPJBu9ASoMm3fPBNDOHv8ryj t1Z/+Ki97h31i/myiGue3CSmlnp1frxUSK+JFCXf/8WWXORyPmc0hh5XFcumII3i+Myl mqltArhUpEsXHIr15wKCR2tzZxmkxL73J1sT9i+SabybKhtcGnZXnmH0a3mB7gVGu6w5 XSnD/G0FbFDSVjXZMl3VCBNZtLDHJv35TL4jVT2usdxURXquI3jFNqRtgvx4ZaggJlPe Dv7w==
X-Gm-Message-State: AOAM533bK/P1l73zAzB+SGpDiLq4dRrtyrzfzmFxYLLNQ9G3x9x+3gzO Mc0UM0zdgN9Bxt+9ck+v95B+XL+1cF8yWtzzdeA=
X-Google-Smtp-Source: ABdhPJxWGUFzeBaJFqtF9hAc7Sp7vMkX2Cznhk/lh4+iIHxXq/l5XE0Qbc6o7t16tvQju522HtxsgxDlhrbMeuh3ys4=
X-Received: by 2002:ac2:5211:: with SMTP id a17mr22725517lfl.318.1620775690509; Tue, 11 May 2021 16:28:10 -0700 (PDT)
MIME-Version: 1.0
References: <F4CE48A1-7AB0-45D0-97FF-158CE3A04EE1@icann.org> <3EE971EE-0777-44D6-9CD2-771B92FFE938@hopcount.ca> <1d822219-8ab9-2cb7-d0a4-9b8afc39058d@powerdns.com> <2952D408-117B-40D0-B859-7A8E4111629E@hopcount.ca> <CAHbrMsD+uiaYQ8i58VRjF=3AtW9uAoAtgbKzNzrPZC3QCmD2pQ@mail.gmail.com> <CAH1iCirykCpqkQEizYUBYMJEXMYRGkWvnzyo-jP=XOT-4fP-EA@mail.gmail.com> <123fd984-a3e1-0d09-b745-9a7ed6260759@nic.cz> <CAHbrMsCrf8GS3N=HF53X-M0oq09yw_vKGFLU_qA6wt94-+vNXg@mail.gmail.com> <07FE2C2B-10C4-47B0-BFF7-AD8E980A2E26@hopcount.ca> <CAHbrMsB6qGs2QsvYMC9j2ahWAR80gdcsDbgihQiXYXG03OY9qQ@mail.gmail.com> <D72B8D52-50F8-457F-B123-D303F4865557@hopcount.ca> <CAHbrMsDzWjib5zfRpr3hJk4bjXjGAq9Z2pymPoLac9rJZPbWAQ@mail.gmail.com> <CAH1iCipSweK0nv06kLH0EJJD8Khn9kZTqjYLzSzN86mjr0ZQdA@mail.gmail.com> <CAHbrMsC_bjKXXWNdsDDS4jADBG0GNMMgTZCpo3JryLdwQGfbXw@mail.gmail.com> <CAH1iCipTh2iQZ8V=rnfJpomDrMGaMmHMxVs7=YEUYb6CFOAtTg@mail.gmail.com> <CAHbrMsCgG2joydsZ80DLNYP_qNOVKSqWUd_AR7Kop7w_sYBqLA@mail.gmail.com> <CAH1iCipqocx=S_DU4pDKAEfxeBi7in09bR0YZ6FPxAGniWcwaw@mail.gmail.com> <CAHbrMsBXOwLKNRpsgyFgXTeECFL=7e4s6dSjHig2tXUuWfczWQ@mail.gmail.com>
In-Reply-To: <CAHbrMsBXOwLKNRpsgyFgXTeECFL=7e4s6dSjHig2tXUuWfczWQ@mail.gmail.com>
From: Brian Dickson <brian.peter.dickson@gmail.com>
Date: Tue, 11 May 2021 16:27:59 -0700
Message-ID: <CAH1iCiozNk-hqVBiPjqXk4sZxotkZBmfK6tQLvoBuy6uHwFjaQ@mail.gmail.com>
To: Ben Schwartz <bemasc@google.com>
Cc: dnsop <dnsop@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000004b237705c2163f2c"
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/ihQJvBrC9RLPzbcAcl4WWRmWimc>
Subject: Re: [DNSOP] [Ext] I-D Action: draft-ietf-dnsop-svcb-https-05.txt
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 11 May 2021 23:28:16 -0000

On Tue, May 11, 2021 at 4:16 PM Ben Schwartz <bemasc@google.com> wrote:

>
>
> On Tue, May 11, 2021 at 4:13 PM Brian Dickson <
> brian.peter.dickson@gmail.com> wrote:
> ...
>
>> What is the difference between
>>
>> foo.example.com HTTPS 0 foo.example.net
>>
>> and
>>
>> foo.example.com HTTPS 1 foo.example.net
>>
>> (and assume there is an HTTPS record at foo.example.net, which is the
>> same in both of those example cases.)
>>
>
> In the first case (AliasMode), the ServiceMode HTTPS record of
> foo.example.net will be used.
> In the second case (ServiceMode), the SvcParams are empty, and only the A
> and AAAA records of foo.example.net will be used.
>

What if, instead of overloading the Priority 0 to also mean AliasMode, you
had AliasMode be an SvcParams entry (which, if present, would be the only
param allowed)?
That would handle the AliasMode vs ServiceMode thing, and also allow
MultiCDN.
Assuming that if any RRs have AliasMode, they all must, but also allowing
multiple aliases with different priorities...

Brian