[191461] in North American Network Operators' Group
Re: QWEST.NET can you fix your nameservers
daemon@ATHENA.MIT.EDU (William Herrin)
Thu Sep 15 20:00:17 2016
X-Original-To: nanog@nanog.org
X-Really-To: <nanog@nanog.org>
In-Reply-To: <20160915233057.3671554564B6@rock.dv.isc.org>
From: William Herrin <bill@herrin.us>
Date: Thu, 15 Sep 2016 19:59:45 -0400
To: Mark Andrews <marka@isc.org>
Cc: "Aaron C. de Bruyn" <aaron@heyaaron.com>,
NANOG mailing list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Thu, Sep 15, 2016 at 7:30 PM, Mark Andrews <marka@isc.org> wrote:
> Then there is SPF. A fare portion of the reason why the SPF record
> failed, despite it being architectually cleaner than using TXT
> records, is that some nameservers gave bad responses to SPF queries.
Hi Mark,
I'm going to stop you there. The SPF record type failed because
resolvers can't pass requests between clients and authoritative
servers unless they can parse them. New DNS record types essentially
require a universal software upgrade before they work. And universal
software upgrades do not happen well or in anything approaching a
timely manner. The next new DNS record type will fail for the same
reason. And the one after that.
TXT is the DNS record type that's extensible without a software
upgrade. Like it or lump it.
Regards,
Bill Herrin
--
William Herrin ................ herrin@dirtside.com bill@herrin.us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
