Dê uma olhada em ForceBindIP . Vincule o executável do jogo à interface sem fio e você deve estar definido.
Informações adicionais:
ForceBindIP is a freeware Windows application that will inject itself into another application and alter how certain Windows Sockets calls are made, allowing you to force the other application to use a specific network interface / IP address. This is useful if you are in an environment with multiple interfaces and your application has no such option for binding to a specific interface.