I called ZyXEL hotline to get to know if my AP ZyXEL G3000-H is able to send requests to authenticate users by MAC adress (don't think it is able to do it without any update or smth., because I haven't discovered any kind of setting to do that) They couldn't help me (great technical support ;)) So maybe one of you guys can tell me smth. about it? Perhaps one of you is working with that AP.