john9527
Part of the Furniture
It's not the router....this fork will only generate a DNS query either at boot or following a WAN failure (it uses pings to monitor the internet). And in that case it would go down the list appended by @dave14305 , so you would see a request to asus.com first.I have Pihole installed and pointed the router to Pihole , this is what I see:
The output you appended is probably a response list. Every DNS server (whether IPv4 or IPv6) will return both A and AAAA responses.