Too many requests towards DNS (UDP port 53)

I’m seeing too many connections towards UDP 53 - DNS servers. Easily it’s showing 600+ connections, in peaks even 1500+ on tab in Luci - Status > Real Time Graphs > Connections.

I don’t believe this is correct behavior. What is your experience?

Thank you.

It appears to be a lot. Each packet is considered a different connection, and for one DNS request there are typically several requests upstream. Also the DNS prefetcher is enabled by default and might think you will want to know some particular names. There might still be something unnecessary going on; I don’t know.

In a usual “idle” state with a couple devices I’m getting 100-200 “active connections”.