I’ve gone ahead and set up a BitTorrent tracker that only faces the Hyperboria network. This tracker runs the opensource OpenTracker software written by Dirk Engling, compiled with IPv6 support. It is available via either udp or tcp (udp preferred, as it is less resource intensive):
You can add this tracker to any torrent you create to distribute over the Hyperboria network. No peers outside of Hyperboria will be able to contact this tracker or send/receive any torrent data.