I was looking at some DNS stats and noticed one host was by far top of the most DNS lookups list, with more than 3x the next highest host... I was curious and went looking to find out what it was - only to see that it is my SG2005P-PD, doing mltiple DNS lookups of multiple NTP hosts every few seconds - why would it be doing this, and how do I fix it so it stops? Every omada device on the network should have the same NTP config, so it is really odd that this one device is behaving so badly on its own.

Small snapshot of multiple DNS requests for multiple NTP hosts every few seconds from 192.168.4.92

Confirming that 192.168.4.92 is this Omada managed switch:

By far this one switch is dominating DNS lookup, all for these NTP hosts (30% of ALL DNS requests):

My Site NTP config only has the single "time-dot-nist-dot-gov" (using "-dot-" to prevent illegal link blocking) host specified, so I don't even know where it is getting the other "ntp1-dot-glb-dot-nist-dot-gov" NTP hostname from... and it shouldn't be looking up either multiple times a second (it shouldn't be attemptig to sync time multiple times a second either)!