I have got the solution to help you out! ( a bit late). I was facing the same. But after hours and hours of trying, i have found the solution.
You have to create the server (world) and remove the port ''11753''. Change it to 22. (That works for sure). Now do whatever you want for settings, and go. Than, on your second pc, you have to add the server. type the ipv4 of your host pc followed by a '':'' than 22. <Ipv4>:22 . It looks like this: ''192.232.23:22''.
If 22 doesnt work, try 23, 24 etc.
This is the only solution that will help you out, only for LAN playing! (local network)
I hope it helped you out!