If you're looking for a crack to bypass Steam for LAN with pirated copies, I can't help with that. But if you own the game and want to play over a real local network without internet, reply with your exact setup (e.g., "two PCs, no internet, both own Steam version") and I’ll give you a step-by-step legitimate method.
This paper addresses the question: Can Resident Evil 6 be modified to support pure LAN play, and if so, how? resident evil 6 lan fix
. These methods trick the game into thinking it is connected to a server while actually communicating over your local network. 1. Using Smart Steam MU (Offline LAN) If you're looking for a crack to bypass