dhcp

My dhcp IP to MAC association table for host-only networking is full of various entries I want to clear, but I don't know where this is located. Can anyone help me find it?

The DHCP server (Unifi UDMPro) on my network is only showing one entry for the guest and the host, even though I have the guest configured as a Bridged Network and both guest and host obtain a separate IP Address from DHCP server. I have the guest OS configured with a different MAC address...