[dns-operations] Name server turning off RD bit in response - just curious

Florian Weimer fw at deneb.enyo.de
Tue Aug 7 21:37:57 UTC 2012

* Craig Faasen:

> I noticed that the "rd" flag was missing from the output of a
> standard (recursive) dig against some (*) of the name-services.com
> name servers:

By the way, you should clear the RD bit when querying authoritative
servers.  Setting the RD bit increases the rate of SERVFAIL answers,
compared to queries without the RD bit.

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