some online games and videoconferencing applications are incompatible with nat. the model model rp114 router is programmed to recognize some of these applications and to work properly with them, but there are other applications that may not function well. in some cases, one local pc can run the application properly if that pc’s ip address is entered as the default in menu 15. if one local pc acts as a game or videoconference host, enter its ip address as the default.