IETF Logo Mail Archive

Re: [DNSOP] BCP on rrset ordering for round-robin? Also head's up on bind 9.12 bug (sorting rrsets by default)

Shumon Huque <shuque@gmail.com> Fri, 15 June 2018 23:55 UTC

Return-Path: <shuque@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 36472130E7B for <dnsop@ietfa.amsl.com>; Fri, 15 Jun 2018 16:55:11 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.999
X-Spam-Level:
X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 QD-hfqzVeSVM for <dnsop@ietfa.amsl.com>; Fri, 15 Jun 2018 16:55:09 -0700 (PDT)
Received: from mail-yb0-x231.google.com (mail-yb0-x231.google.com [IPv6:2607:f8b0:4002:c09::231]) (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 0A8D112D949 for <dnsop@ietf.org>; Fri, 15 Jun 2018 16:55:09 -0700 (PDT)
Received: by mail-yb0-x231.google.com with SMTP id v17-v6so4102260ybe.7 for <dnsop@ietf.org>; Fri, 15 Jun 2018 16:55:09 -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=fDiQ0zCF4wY6xchkgP0XJM6Sjy9b4E5Oqx9G7OxHMEY=; b=DEf6kWx3TFs2DlllQ41vLJw3hCwZTKzW9UjrqDBsaSuE+VmbeHMPpVVY5WJLgko0x+ y4vmE8VJrCSpORgM43JyElZ6IO+3Kx4byXQ0YE+LCLqiCLAjv0hTYI5+ydz/Agpr5Qvp WfmjjyElFd3fb9LZx01CXVH9szf3UdOGL+ygg3st2rZKJlde9U+Drgw5nP/GitIJAOcU 3iQxzDT/8VwXOjQZ/CJBWv9g8H5EVf+ECjk9i2wYw+vVz7E5BI3fevOLXSzD1fqCAPHC JmFSdPdsNU3oNOnt5ZdZwr0VN/jHkZRTr62Xkw6jtgj412MuetaPzAEZOHkxftMVEc3i 6ezA==
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=fDiQ0zCF4wY6xchkgP0XJM6Sjy9b4E5Oqx9G7OxHMEY=; b=aHgQxRF8hc2b05Uj4AX+mrORUCSE/56wbRy6idxIIOQP3i/AQjrzwNS3AX226WgyyB 8+WdJMrhbTnouVdtCfY//nUfA3n8huLFpnvGPpoVCsLCiizgUXa74AcNzid4Mbu+pCpi Bh6pNdLkC6o4gP5XtJLOtDZysrYXJBao72pDktKJVzZDvESjZJ2/UypWyoM7BVRYs01o JNq3pSU4ZqonX8pp8eRWeK6W2uTF9l8mWBZ65Bsh21pvxlos1+fSGbj9n0LgigfEnO6G Fqn3SQhJEf0BPYe33TMqCRskHRwN3yg1H/KUtn5hfd9O1isjJBEN6RMXhMBCfOjdAJVn O+1g==
X-Gm-Message-State: APt69E0TRzsQmFEXNR6sgOzZVitd7i7wVFcpSvrR5UwYHBMeoHWH+cUj oCXDEA1Gf1qSt7+AkEEKpL4WKshx5YqJHO7nWps=
X-Google-Smtp-Source: ADUXVKJ8/RhtWcw59VSKwiREpI5PC6zLBKvCTCzmppQ07oyz3reWktVVh3VncknOgvPt9b15/tDe0OlqSApJ75WZ9go=
X-Received: by 2002:a25:54c2:: with SMTP id i185-v6mr2005365ybb.62.1529106908236; Fri, 15 Jun 2018 16:55:08 -0700 (PDT)
MIME-Version: 1.0
References: <CAKC-DJimMOtNCSE95kRs6Dy3dC_mxB=8O2WVA7badp8GK2ci-Q@mail.gmail.com> <20180615171231.GF1126@mx4.yitter.info> <CAHPuVdWP=DVj52diWYTHKqHBET0hFyUWvACT-VpH20iKzed-ww@mail.gmail.com> <CA+nkc8AS6+cZfi_NGT2T+FeQkQ5fKn--HQOOuusL1cYFkdKbKA@mail.gmail.com> <20180615195232.GA5926@jurassic> <CAKC-DJhRJwg7cw8iexCgq9axgjyjnQQaXP2+wD4u=sk3PtypRg@mail.gmail.com> <CAAF6GDfSoE9-VhuFeh2QkABamC0zmLO61qggV6YjP13wvLaQ7g@mail.gmail.com>
In-Reply-To: <CAAF6GDfSoE9-VhuFeh2QkABamC0zmLO61qggV6YjP13wvLaQ7g@mail.gmail.com>
From: Shumon Huque <shuque@gmail.com>
Date: Fri, 15 Jun 2018 19:54:56 -0400
Message-ID: <CAHPuVdW9O0Dsb+05TxtqrUS228ifAYHLWxFs5eXGV+6o=XO9Xg@mail.gmail.com>
To: colm@allcosts.net
Cc: erik+ietf@nygren.org, Bob Harold <rharolde@umich.edu>, "dnsop@ietf.org WG" <dnsop@ietf.org>, Andrew Sullivan <ajs@anvilwalrusden.com>, muks@mukund.org
Content-Type: multipart/alternative; boundary="00000000000016d2bd056eb6f29e"
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/GqtILGyqYU7ZVLwxzo9vY03FPeM>
Subject: Re: [DNSOP] BCP on rrset ordering for round-robin? Also head's up on bind 9.12 bug (sorting rrsets by default)
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.26
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: Fri, 15 Jun 2018 23:55:12 -0000

On Fri, Jun 15, 2018 at 5:55 PM Colm MacCárthaigh <colm@allcosts.net> wrote:

>
> Just a question on this: was the old/classic behavior really
> random/shuffled? Or was it that bind would "rotate" through iterations
> where the order was the same each time if you think of the rrset list as a
> ring, but with a different start and end point within that ring? (That's
> what's described here:
> https://docstore..mik.ua/orelly/networking_2ndEd/dns/ch10_07.htm
> <https://docstore.mik.ua/orelly/networking_2ndEd/dns/ch10_07.htm>)
>

ISC veterans can confirm, but my recollection is that the earliest
implementations were indeed as described above - the response RRset was
cycled/rotated, rather than randomized.

Shumon.

v2.2.0 | Report a Bug | By Email