Most important, IPv6 does not interoperate with IPv4, so transition technologies are required to get IPv4 networks to communicate with IPv6 networks.

更为重要性的是，IPv6不能与IPv4互操作，因此需要转换技术去让IPv4网络与IPv6网络进行通讯。

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ISPs will provide this access using one of many technologies designed to facilitate the transition from IPv4 to IPv6.

FORBES: The End Of IPv4 Is Near

As the addresses for sending information over the internet for IPv4 will soon be exhausted, the transition to IPv6 is inevitable and many tech industry bellwethers like Cisco, Google and Verizon are helping enterprises and individuals make sure that their applications and devices can handle IPv6.

FORBES: Uncle Sam Gives Cisco A Boost With New Internet Protocol

The 6to4 protocol is the latest in a series of tools being developed by the IETF to aid in the transition of the 'Net from IPv4 to IPv6.

CNN: New protocol sneaks IPv6 traffic over the 'Net