Tunngle has a unified, single SWBF2 lobby. You install, register a user name, login, and then you only have 1 SWBF2 lobby. Period. This is not hamachi or a random vpn. Tunngle is specifically for gaming. Openspy (gamespy replacement) is full of bugs, requires someone constantly run a master server, requires that someone is possibly able to create a patch for the swbf2.exe, and requires every person to install that patch. If the master server goes down, it is useless. If the master server changes hands, then you need to install another patch, and good luck chasing everyone down for that.
Tunngle requires no modification or patch to your existing game. Install, run, login, join the single SWBF2 network. Load/run SWBF2, go to LAN, and it will list ALL the dedicated servers and non-dedicated servers, just as we currently have under the netplay option. It does not splinter anything, and it keeps everyone on the same page.
Over the past year or so, when I join the SWBF1 lobby on Tunngle, I notice that the SWBF2 lobby usually has a few people in there. I would suggest people try it out now. SWBF1 has already been through this, and openspy only fragmented the remaining community into 2, and never worked properly for most people, glitchy, full of bugs, and was completely abandoned. Now everyone who plays uses tunngle, period. If you can find a better and easier option, then please let me know, as most of us want a simple way for online play.
This is what is most likely to happen. Because it has already happened to swbf1.