I just upgraded to pfSense Plus 24.03. Thought I'd reinstall NTOPNG to check it if no longer interfere with KEA DHCP v4, sorry to report it still does. After a few hours KEA DHCP v4 stops running with the error about "cannot lock socket lockfile, /tmp/kea4-ctrl-socket.lock, : Resource temporarily unavailable". Deleting the lock file temporarily solves the issue, however in a few hours it will cease running again with the same lock message.