[131781] in North American Network Operators' Group
Re: IPv6 rDNS
daemon@ATHENA.MIT.EDU (Lamar Owen)
Wed Nov 3 16:10:38 2010
Date: Wed, 3 Nov 2010 16:10:19 -0400
From: Lamar Owen <lowen@pari.edu>
To: nanog@nanog.org
In-Reply-To: <Pine.LNX.4.64.1011021808480.26001@a84-22-97-10.cb3rob.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Tuesday, November 02, 2010 02:21:14 pm Sven Olaf Kamphuis wrote:
> getting rid of bind has various other advantages, such as no longer
> needing tcp to transfer "zone files" (Retarded concept to say the least)
> so there are no more "tcp issues" related to anycasting your authorative
> dns servers, as you can simply have them talk to your central database
> over their bgp session ip, which isn't anycasted, no more port 53/tcp
> therefore! yay, good riddance!
Performing zone transfers is not the only reason for 53/tcp; it can also be needed for long (>512 byte) query responses. Thanks to the one-two punch of DNSSEC and IPv6, the probability of a DNS reponse needing TCP on port 53 is much greater now.
