Hello, 
I did a "show ap summary" on one of the WLCs we have and 9 LAPs were listed displaying the LAP's name, MAC, IP address, model, and number of clients associated with each LAP. A client's laptop is showing that it associated with a LAP and displayed the LAP's MAC address; however, that MAC address didn't match anyone of the MAC addresses listed when I issued the  "show ap summary" command. What's the best way to search or lookup or validate that MAC address? 
Thanks in advance. 
Best, ~zK