i would not say solved, the router continues dropping connection when an excessive number of DNS queries are made: I do some testing with BIND RPZ on raspberry pi and it seems i hit the router’s limitation. hopefully, it can be corrected programmatically, but I have not figured out how to do so.

FYI: the rate it’s happening is dozens of queries per second - unlikely can be achieved by a healthy system. so I suspect @alistair23 might have something suspicious going on on his system (a bot infection?)

with this rate of testing no dropped connections, but if i 2-3x increase it I will experience the same drops