logging user mac

Is it possible to logging user mac address? right now in logs I see only: Login incorrect (mschap: External script says: Logon failure (0xc000006d)): [test/<via Auth-Type = EAP>] (from client 192.168.0.2 port 50024 cli 68-B5-99-C8-B0-5E via TLS tunnel) Login OK: [Administrator/<via Auth-Type = EAP>] (from client 192.168.0.2 port 50024 cli 68-B5-99-C8-B0-5E) as I guess this mac (68-B5-99-C8-B0-5E) is NAS my version freeradius 3.0.0.4