you need to install the soldat 1.2 fix and/or change the content of the lobby_servers.txt in your soldat folder to lobby.soldat.pl instead of a ip adresse to receive the server list successfully
The IP already whas good on my computer when I instaled the game.
And my advice is to instal "Soldat 1.2" and then instal the "Soldat 1.2 FiX".
The FiX is VERY inportant[:D]