trouble with .gov dns?

Mark Andrews marka at isc.org
Mon May 2 20:19:49 CDT 2011


In message <878vupuiu0.fsf at mid.deneb.enyo.de>, Florian Weimer writes:
> * William Herrin:
> 
> > Anyone else having trouble with .gov DNS failing with edns-udp-size
> > set to 512?
> 
> You need an UDP size of at least 1220 for DNSSEC, see RFC 3226,
> section 3.  A query that advertises a smaller buffer size is
> non-compliant.  BIND will send such queries, but this is a
> controversial feature.
> 
> This has been noted before, for example:
> 
> From: Mark Andrews <marka at isc.org>
> Subject: [dnsext] Failure to add glue MUST cause TC to be set.
> To: dnsext at ietf.org
> Date: Sun, 20 Feb 2011 08:07:15 +1100
> Message-Id: <20110219210716.72943A5602B at drugs.dv.isc.org>

And nameservers that don't set TC when they can't fit glue are
broken RFC 1034.

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org




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