yeah, you're on the right path there, but unfortunately Photon PUN 2 (the api i use for networking) doesn't necessarily allow for LAN hosted games out of the box
quote from a forum i found : "PUN does not support hosting the game within some client. You always need a dedicated Photon Server for the clients to connect to. There are various pros for this approach and some cons, of course. It's simply the way Photon works."