Hi, I have noticed that more recent rlm_python versions have function bindings for implementing Simultaneous-Use checking in python module. Something like this ... python_init done Module: Loaded python python: mod_instantiate = "pppoe" python: func_instantiate = "instantiate" python: mod_authorize = "pppoe" python: func_authorize = "authorize" python: mod_authenticate = "pppoe" python: func_authenticate = "authenticate" python: mod_preacct = "pppoe" python: func_preacct = "preacct" python: mod_accounting = "pppoe" python: func_accounting = "accounting" python: mod_checksimul = "pppoe" python: func_checksimul = "checksimul" python: mod_detach = "pppoe" python: func_detach = "detach" Module: Instantiated python (PPPoE) ... What should func_checksimul return to signify that user is already logged on / not loged on ? Is it safe to use this feature in production ? Regards, Flamur Rogova