[dns-operations] root? we don't need no stinkin' root!

[Florian Weimer]

* Jim Reid:

>> On 25 Nov 2019, at 22:19, Florian Weimer <fw at deneb.enyo.de> wrote:
>> 
>>> What do you consider to be a lot of queries? The root server system
>>> collectively handles 500K-1M queries per second. That seems rather a
>>> lot to me. YMMV.
>> 
>> But globally?  For the entire planet?
>
> Yes. If you consider a well-behaved recursive resolver would only
> query the root a few times a day (probably < 10), a query load of
> 0.5-1M/second seems on the high side, even for the whole planet.

Up until recently, well-behaved recursive resolvers had to forward
queries to the root if they were not already covered by a delegation.
RFC 7816 and in particular RFC 8198 changed that, but before that, it
was just how the protocol was expected to work.