Tribal Trouble must resolve specific hosts in order for Match play to work.
The sample oddlabs.zone configuration resolves these specific hosts to the loopback interface.
One can then test the full capabilities of the game on your private machine.
One can just as easily resolve to a server on your private network.
Then again, one can modify the _address definitions in: tt/classes/com/oddlabs/tt/global/Settings.java
// network
public String registration_address = "registration.oddlabs.com";
public String matchmaking_address = "matchmaking.oddlabs.com";
public String bugreport_address = "bugreport.oddlabs.com";
public String router_address = "router.oddlabs.com";