Device not using pi-hole

[Bucking_Horn]

@melvinkitnick

A quick way to probe for a DHCP server on your LAN and ensure it works as expected is to use this nmap script : nmap --script broadcast-dhcp-discover

Or you could run

pihole-FTL dhcp-discover

which doesn't suffer from the same shortcomings as nmap - see Reliably detect all DHCP servers on a network? - #5 by Bucking_Horn for further details on the evolution of pihole-FTL dhcp-discover.