[dns-operations] solutions for DDoS mitigation of DNS

[Tessa Plum]

Where is "dnsdbq" coming from? I didn't see my ubuntu system has that a 
command.

Thank you.


Paul Vixie wrote:
> $ dnsdbq -r '\*.berkeley.edu/ns' -A 2020-01-01 -j | jq .rrname | uniq