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

Mukund Sivaraman <muks@mukund.org> Fri, 15 June 2018 19:52 UTC

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Date: Sat, 16 Jun 2018 01:22:32 +0530
From: Mukund Sivaraman <muks@mukund.org>
To: Bob Harold <rharolde@umich.edu>
Cc: Shumon Huque <shuque@gmail.com>, IETF DNSOP WG <dnsop@ietf.org>, Andrew Sullivan <ajs@anvilwalrusden.com>
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Subject: Re: [DNSOP] BCP on rrset ordering for round-robin? Also head's up on bind 9.12 bug (sorting rrsets by default)
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On Fri, Jun 15, 2018 at 02:38:00PM -0400, Bob Harold wrote:
> Round-robin is a documented feature that many applications use.  Removing
> it from DNS resolvers, and then having to add it to a much larger number of
> applications, does not seem like a good trade-off.

The _default_ in BIND 9.12 was changed from order random to order
none. It seems to be missing from the release notes by mistake, but the
administrator manual mentions what the default is:

         <para>
	    By default, records are returned in indeterminate but
            consistent order (see <command>none</command> above).
          </para>

As before, an admin can configure it to any of {fixed, random, cyclic,
none} per class/type/domain, in named.conf. See the section "RRset
Ordering" in the administror manual.

No sorting functionality was removed. The default was changed.

		Mukund