[55695] in North American Network Operators' Group
Re: Odd DNS responses for www.neopets.com
daemon@ATHENA.MIT.EDU (Crist J. Clark)
Fri Feb 7 17:29:30 2003
Date: Fri, 7 Feb 2003 14:28:49 -0800
From: "Crist J. Clark" <crist.clark@attbi.com>
To: David Russell <drussell@thrupoint.net>
Cc: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu
David Russell wrote:
> > Maybe it's just me, but isn't there something odd about a DNS query
> > coming back with 78 entries for the same host? It sends back an UDP
> > packet that gets truncated and the DNS resolver reverts to TCP to get
> > the full list.
[snip]
> >
> > It seems to cause problems with Windows clients and/or Windows DNS
> > servers. Seems like overkill.
> >
> I feel your pain because I use a DNS module in my scripts that craps out
> when it sees one of these truncated packets, but then the problem is with
> the client and not DNS. It is too bad that the DNS packet size can't be
> increased to 1500B.
It can, RFC2671.
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
