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

John Levine <johnl@taugh.com> Wed, 12 May 2021 22:00 UTC

Return-Path: <johnl@iecc.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 6C1CA3A1D87 for <dnsop@ietfa.amsl.com>; Wed, 12 May 2021 15:00:41 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.851
X-Spam-Level:
X-Spam-Status: No, score=-1.851 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, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=iecc.com header.b=O7RTtal5; dkim=pass (2048-bit key) header.d=taugh.com header.b=gKPxt1rj
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 HvhsCvjI9rsu for <dnsop@ietfa.amsl.com>; Wed, 12 May 2021 15:00:36 -0700 (PDT)
Received: from gal.iecc.com (gal.iecc.com [IPv6:2001:470:1f07:1126:0:43:6f73:7461]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 767113A45B8 for <dnsop@ietf.org>; Wed, 12 May 2021 14:39:06 -0700 (PDT)
Received: (qmail 61297 invoked from network); 12 May 2021 21:39:04 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=iecc.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=ef6b.609c4af8.k2105; bh=jZiX2tHjdHHTqzzAaty3sG+r3Wfhzs4KzkZsCkP8NiM=; b=O7RTtal5YNtZHFmKcahUv4O5SpiRgwhGk8VknGR/HnAqRdTueUa03ZNcKcM1tuVm5xqAUOv8Vlh2kp+FtSdlERxEy4IxXMofsdqVefRbaBdjd+7rnjSBgt6/I2aJIF37pqcYJb5gXEHEJdVcbvd0VxSjJSTv3uS8RX0OctsLdBPnCz6ZgOjMYt+J0pYGrQ9v1AkbsC2Q6E+LH6rlubMFkj66GEyumfMSma4pbIN2hzBTHBJGdR+6KfP0D9bOlBk3tXLrvHxXPWtcrpHcfDpj1rz5W4lb2uXUPpu0Bv6YTIPtpIeyBY9EEL5j8CqrESEuSG8r+1WiKY+mYm3Uc/zigQ==
DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=taugh.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=ef6b.609c4af8.k2105; bh=jZiX2tHjdHHTqzzAaty3sG+r3Wfhzs4KzkZsCkP8NiM=; b=gKPxt1rjgDIAWvDhVt3Y+GQczRWw2X0H7S51dM1qBd8yzfoN3+iVj3V0uiK9Om3NmB0toPre5Hi/oItCd7m0g5xbup2jt4BIs7MOuhDdgBuoEHYW5ysbJunv7GUJzO16ENh+YZpQPb0kbCDXv6ycK8uAYEVc1AMRtAhQqN9jXoOso+XPQO0u2AiGvBze0AhxMRZ3FeNnQIK5MfgdtLEnv4qlrCVvlH9sTxYlDDkMW5JLdtTRqtzlbRaiMnlwUZyiAFf0vuxQcTjcfmI/4MsiSKg1EdCyn70oycNgvnXZBtWapBwkn5j7X5bFjgrl2L5+oX21g/mwz9ABHICoodToOw==
Received: from ary.qy ([IPv6:2001:470:1f07:1126::78:696d:6170]) by imap.iecc.com ([IPv6:2001:470:1f07:1126::78:696d:6170]) with ESMTPS (TLS1.2 ECDHE-RSA AES-256-GCM AEAD) via TCP6; 12 May 2021 21:39:04 -0000
Received: by ary.qy (Postfix, from userid 501) id D5F1F7AA827; Wed, 12 May 2021 17:39:03 -0400 (EDT)
Date: Wed, 12 May 2021 17:39:03 -0400
Message-Id: <20210512213903.D5F1F7AA827@ary.qy>
From: John Levine <johnl@taugh.com>
To: dnsop@ietf.org
Cc: jabley@hopcount.ca
In-Reply-To: <7ADF1FB2-97A4-4C49-8F25-8BF03BE01640@hopcount.ca>
Organization: Taughannock Networks
X-Headerized: yes
Cleverness: minimal
Mime-Version: 1.0
Content-type: text/plain; charset="utf-8"
Content-transfer-encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/jnCkQ3o9Ky4oygla6j0CwpNEX_g>
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: Wed, 12 May 2021 22:00:42 -0000

It appears that Joe Abley  <jabley@hopcount.ca> said:
>> Agreed that there is no such issue with either wire format if all parties in the ecosystem are bug-free and RFC-compliant.
>
>Do you know of an example of a DNS authoritative or recursive server that does return truncated RRSets in the ANSWER section?

A lot return truncated glue in the ADDITIONAL section.  Are we sure that wouldn't be an issue with SVCB?
I honestly don't know.

djbdns would return random subsets of A records if you had a lot of them, as a kind of poor man's load
balancing, but I don't know of anyone who still uses it.

R's,
John