This read-write enumerated object, when read, returns valid(0) to confirm it is a usable command, and when set to clear(1), clears the MAC authentication session entry identified by this row's interface and MAC address index. Administrators use it to force re-authentication of one specific device by its MAC address on a specific interface, without affecting any other authenticated devices on that port or elsewhere on the switch. For example, setting this object to clear(1) for a row keyed on interface 3 and MAC address 00:1a:2b:3c:4d:5e forces that specific device to re-authenticate.