软件包：6tunnel（1:0.13-2） [debports]
TCP proxy for non-IPv6 applications
6tunnel allows you to use services provided by IPv6 hosts with IPv4-only applications and vice versa. It can bind to any of your IPv4 or IPv6 addresses and forward all data to IPv4 or IPv6 host.
Tunnelling for application that don't speak IPv6. It can be used for example as an IPv6-capable IRC proxy in other network.