single dns query for A and AAAA

Marco Davids (Prive) mdavids at
Tue Feb 19 12:59:42 CET 2013

On 02/19/13 09:47, Phil Mayers wrote:
> On 02/19/2013 07:46 AM, Havard Eidnes wrote:
>>> So, i was wondering if anyone has compared the following two
>>> scenarios in terms of speed, performance and IPv4v6/IPv4
>>> preference:
>>> 2 simultaneous dns queries (a & aaaa)
>>> 1 single dns query (any)
>>> I'm almost 100% sure that the "any" query will be too heavy for
>>> many domains (esp with DNSSEC), [...]
>> That's not the primary issue with that method.  The issue is that
>> this will simply not work, for other reasons:
> All correct; good explanation.
> "any" is for debugging, not production queries. Google "qmail any" for 
> an example of the hassle that using it this way can cause.

Or try:

dig ANY

(just for fun)


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