i went to open the lan to play with my nephew who has his own account as well like normal

what i expected was to be able to play the latest snapshot with my nephew
what happen was the game thought it was a server and tried to log in and it failed surprizingly
Steps to Reproduce:
1. go to the snapshot 13w22,13w21
2. have one of the players start a world
3. then try to join and it says trying to connect to server where there is no server