realm and @ in username

Hi, I try to configure my proxy freeradius. The problem is that i have a "@" caracter in my username and i think that freeradi us interpret the realm after the @ caracter. But it's not the realm because i have a @ in the username. fr.wifimetropolis.com is my realm and alexandre.lai@idcware.com is my username. I would like send my requet in this format for exemple : fr.wifimetropolis.com/alexandre.lai@idcware.com but i test with radtest command, it's didn't work. Regards Cordialement, Jonathan Khattir Technicien Support Nomosphere jkhattir@nomosphere.fr