The CT3 wiki is starting to grow organically. A few days ago, an excellent article “IPv6 over IPv4 tunneling” appeared out of the blue sky. Michael Aschwanden did a great job describing the IPv6 tunneling mechanisms and various free public services. He also included sample router configurations used to connect to the public tunneling services.
Ivan Pepelnjak, CCIE#1354, is the chief technology advisor for NIL Data Communications. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.