trouble with .gov dns?

William Herrin bill at herrin.us
Mon May 2 12:46:59 CDT 2011


On Mon, May 2, 2011 at 1:31 PM, Florian Weimer <fw at deneb.enyo.de> wrote:
> * William Herrin:
>
>> On Mon, May 2, 2011 at 1:13 PM, Florian Weimer <fw at deneb.enyo.de> wrote:
>>> * 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.
>
>> I have "dnssec-enable no;" in my bind config.
>
> It does not seem to have the intended effect.

Hmm. You're right. Bind won't disable DNSSEC unless you turn edns off
completely with:

server 0.0.0.0/0 {
  edns no;
};

Thanks for the info!

Regards,
Bill Herrin


-- 
William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004




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