6to4
PROTOCOL FOR TUNNELING IPV6 OVER EXISTING IPV4 NETWORKS, WITH EACH CLIENT CONNECTING TO A PARTICULAR SERVER AND RECEIVING A SUBNET FROM 2002::/16
6 to 4; 6to4 address; 6TO4; 192.88.99.1
6to4 is an Internet transition mechanism for migrating from Internet Protocol version 4 (IPv4) to version 6 (IPv6) and a system that allows IPv6 packets to be transmitted over an IPv4 network (generally the IPv4 Internet) without the need to configure explicit tunnels. Special relay servers are also in place that allow 6to4 networks to communicate with native IPv6 networks.