[dns-operations] question on query to DNS server's IPv6 interface

[Stephane Bortzmeyer]

On Tue, Mar 31, 2020 at 08:37:30PM +0800,
 Tessa Plum <tessa at plum.ovh> wrote 
 a message of 13 lines which said:

> Another question, in DNS server, how to count how many queries were
> from IPv6 interface, and how many queries were from IPv4 interface?

It depends on the name server. Here, is an example with nsd:

% sudo nsd-control stats | grep udp
num.udp=3070553
num.udp6=1805679

(IPv4 and IPv6)