Can Calling-Station-Id be proxied

Hi, Does freeradius proxy the Calling-Station-Id ? I am sending a realm to another radius server that will record the mac address of the users computer. Effectivly locking the user login to the mac address. It seems the "Calling-Station-Id" is not proxied to the main server. *************************************** Sending Access-Request of id 4 to 127.0.0.1:1820 User-Name = "test" User-Password = "test" NAS-IP-Address = 10.0.0.100 Proxy-State = 0x33 *************************************** Is ther a way to send additional details with the proxy request? Thanks