[153514] in North American Network Operators' Group
Re: AAAA's for www.netflix.com
daemon@ATHENA.MIT.EDU (Mark Andrews)
Thu Jun 7 18:05:15 2012
To: nanog@nanog.org
From: Mark Andrews <marka@isc.org>
Mail-Followup-To: nanog@nanog.org
In-reply-to: Your message of "Thu, 07 Jun 2012 18:58:18 +0200."
<20120607165818.GA30416@srv03.cluenet.de>
Date: Fri, 08 Jun 2012 08:04:12 +1000
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
In message <20120607165818.GA30416@srv03.cluenet.de>, Daniel Roesen writes:
> On Thu, Jun 07, 2012 at 07:52:29AM -0600, Dave Temkin wrote:
> > Just to close the loop on this - UltraDNS has an issue with CNAMEs and
> > their Directional DNS service. We (Netflix) have applied a workaround and
> > it appears stable.
>
> Hm, looking at http://v6launch.ripe.net/, whatever you changed didn't
> improve visibility of the AAAA, but decreased it.
TTL's of zero don't help. The A query has a TTL of 3600 in the
response the AAAA query has a zero TTL. This is rocket science.
This isn't hard to do correctly. How to handle CNAMEs has been
specified 1/4 of a century.
> Best regards,
> Daniel
>
> --
> CLUE-RIPE -- Jabber: dr@cluenet.de -- dr@IRCnet -- PGP: 0xA85C8AA0
>
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
