Tunnel broker could provide virtual dial-up services to connect the separated IPv6 nodes to large IPv6 networks, which makesit extremely helpful for IPv6 deployment.

• 隧道代理是一种虚拟的拨号服务器,它可以根据用户的需要将被IPv4路由器包围的IPv6节点接入到大型的IPv6网络中,对于IPv6的发展能够起到巨大的推动作用。