[dns-operations] DNS prefetching, DLV and cheap NAT router state table overflow

[Florian Weimer]

* bert hubert:

> I'd blame the AVM. I've been told it runs Linux, so perhaps you
> could hack into it.

Yes, I'll try to gather more data from it.

> Do you have an indication of how much DNS traffic we are talking about?

Unbound says it has processed a round of 300 recursive queries when
the anomaly occurs.  tcpdump shows that this translate to roughly
5,000 upstream queries (not all of them answered), over a period of
about 1.5 minutes.