Lan issues

Bug Problem that I can't play Lan

What I expected to happen was...:
The thing that should have happen was that when I press lan than I can play with my friends. I am playing on my mac

What actually happened was...:
The numbers of my lan server came up as 0.0.0.0:5164

Steps to Reproduce:
1. Open Lan
2. Number comes up not the same in 1.4
3. Than when they try and connect it tells them that it failed to connect
4. So he opened one and the server address was 0.0.0.0:*****
5. I try to connect to his
6. Failed Connect