No Message Recieved w/2 People On Same Network

[Dimmizer 4]

Hello DayZ Community...

 

I'm here to see if anyone else is having issues with being able to play DayZ Standalone when having 2 people connect to the same server that are on the same network/router/modem. I've been playing the Standalone for months without any problems. My father just purchased the game a few nights ago and tonight (Feb 17) we both tried to play together and anytime he tried to join me in a server I was given the "No Message Received in 10 seconds" and he eventually got "Could not connect to host"

Anyone got ideas?