Three main transmission points have been established in Tromsø; they are both connected to the 6NET IPv6-only network. From these three main points, a total of 12 new networks have been built. As of writing there are somewhere between 15 and 20 home networks spread out over these 12 networks, with an unknown number of machines connected.

In practice, connectivity to 6NET is provided by Uninett and the first transmission point is located at the University of Tromsø. This point is marked (1) in Figure 13-3. From there a fibre carries the traffic to the second transmission point (marked (2)). From there a single beam carries the traffic across town to a high mast (marked (3)) from where most of the city centre is covered. In addition, the Student House (“Driv”) downtown was connected to the network by means of a fibre; this point is marked (4).

A variety of antennas are in use, from large 24dBi dishes to small 6dBi omni-directional. The network is fully routed with a mix of Cisco and NetBSD routers. In addition, all home networks are routed and prefixes are allocated to homes as needed. The core is IPv6-only in order to ensure that no traffic “leaks” out of the home networks.