Dear people, as you can see in this Access-Request: rad_recv: Access-Request packet from host 10.1.4.82 port 65201, id=37, length=79 User-Name = "test" User-Password = "testpass" NAS-IP-Address = 10.0.2.15 NAS-Port-Type = Virtual NAS-Port = 1228 Calling-Station-Id = "10.0.2.15" Service-Type = Login-User the client is entering incorrect data into the field "Calling-Station- Id". In the setup used, it should not differ from the host. But "10.0.2.15" != "10.1.4.82" Authentication is handled by a perl-module. The outcome of the module depends on the host sending the packet. How (if at all) can I access the value of "host" (10.1.4.82 in the example above) from within the perl-module? Many thanks and best regards, Wolfgang