Tutorial: IPv6 Tunnels Part 2 - Automatic 6to4 Tunnels

In our previous article on IPv6 tunnels, we looked at manual GRE and IPv6IP Tunnels in order to provide connectivity for IPv6 networks segregated by an IPv4 network. By tunneling IPv6 over IP, we can migrate our internal networks to IPv6 and still have communication between these networks, even though we are seperated by an IPv4 network. In this article we will be using another method to provide connectivity for IPv6 networks segregated by an IPv4 network: The Automatic 6to4 Tunnel! Mastering IPv6 is not only an important part of a CCIE candidates journey, but will become increasingly important as the global pool of IPv4 addresses diminishes….