Kevin Darcy wrote:

> But I believe the QTYPE was
> _originally_ intended to be a robust mechanism for fetching multiple
> RRsets at a time.It just didn't work out that way...

PowerDNS Recursor uses ANY to retrieve both A and AAAA records in one query:

http://lwn.net/Articles/275823/

| * Full IPv6 parity. If configured to use IPv6 for outgoing queries
|   (using query-local-address6=::0 for example), IPv6 and IPv4 addresses
|   are finally treated 100% identically, instead of 'mostly'. This
|   feature is implemented using 'ANY' queries to find A and AAAA
|   addresses in one query, which is a new approach. Treat with caution.

I didn't test it enough yet to see any difference in performance or
problems with this approach.


Hauke

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