The [UDP] is normal when viewing a server locally.
This was the same problem that plagued us for 2 months until the patch came out. Are you using the dedicated server program (jampded.exe)? You must do two things to run it:
1. Apply the 1.01 patch to your server game insatallation first
2. Use the latest dedicated server program, version 126.96.36.199
You must also forward ports 29060-29062 inclusive.