Minimal responses and speeding up queries

[Tony Finch]

Job <Job at colliniconsulting.it> wrote:
>
> Actually, dig @host some_url still shows an additional query, maybe not
> needed for a caching-only resolver:
>
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

That isn't an additional query, it's a record in the additional section of
the response - specifically the OPT record which includes the EDNS buffer
size, DNSSEC flag, and other extensions.

Tony.
-- 
f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
Malin, Hebrides: South or southwest 5 to 7, occasionally gale 8 later. Rough,
occasionally very rough. Squally showers, rain later. Good becoming moderate
or poor later.