ad flag for RRSIG queries

Chris Thompson cet1 at cam.ac.uk
Wed Jul 14 11:52:00 UTC 2010


On Jul 13 2010, Doug Barton wrote:

>On Tue, 13 Jul 2010, Marco Davids (SIDN) wrote:
>
>> Hi,
>>
>> Can anyone explain to me why the 'ad'-flag is set for this query?
>>
>> dig +dnssec -t RRSIG www.forfunsec.org
>
>I'm using 9.7.1-P1 with dlv and I'm not seeing the AD flag on that. What 
>version of BIND are you using?

With 9.7.1-P1 (and a trust anchor for dlv.isc.org) on a local workstation

  dig +dnssec -t RRSIG www.forfunsec.org @127.0.0.1

initially times out. But after doing

  dig +dnssec -t ANY www.forfunsec.org @127.0.0.1

the same command reports the three RRSIG records (for A, AAAA and SSHFP
types) that got into its cache, and it does set the "ad" bit in that
response.

-- 
Chris Thompson
Email: cet1 at cam.ac.uk



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