See attached diff against release 0.13.10.4585 which adds a WiFi Clients entry under the devices tab and augments Apple AirPort device "Overview" tabs with a list of clients. Currently connected clients are highlighted green, others grey. Clicking on the "WiFi Clients" header will display graphs of signal strength, noise and speed for all clients connected to that base-station. Clicking on a client will display graphs for connections to all base stations that client has connected to. MAC addresses are used to identify clients unless the mac_ip_host table is populated as shown below. There's no sensible way to gather this data as the base-station could be anywhere, so ARP won't help.