Curious I was looking at the connections from a GNU/Linux machine running a BitTorrent (Transmission) client and I noticed about 50% of the connections were to IPv6 peers for a particular tracker.

The IPs were a mixture of freenet (probably due to the very simple gogoc package use – this is the Gateway6 client that was in a package called gw6c or tspc)  plus others but the most were Freenet.

Why is this ? Well with the gogoc package then you get an anonymous freenet IPv6 address for your client machine without configuring a thing. From a corporate point of view this does add an extra layer of complexity to managing internet traffic to and from your LANs. You may block P2P traffic but P2P over IPv6 tunnels may be leaking through.