ad-hoc terminals are found at #503

I have investigated wireless stations in room 503 at 10:30JST.
The stations found at this time except for AP provided by network
services. Please stop them.

IETF                                    02:9C:CB:E1:C0:81       10      39      
Ad-hoc
tsunami                                 7A:03:88:01:B7:03       6       32      
Ad-hoc