[Suggestion] Dedicated server without internet connection

Have a dedicated server that works great when i have an internet connection, however if i remove that the server cant be accessed , even with direct IP. It appears that the server goes out to the internet and then back into my network for me to connect. I am in the military and would love to play when i have no connection on a LAN, the resolving of this issue will allow a group of 40 or 50 players to access the dedicated server and play together while not having internet, we all love this game but not being able to play together and only in an offline state would mean we would not continue to support the game.