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 (default) or IPv6 addresses and forward all data to IPv4 or IPv6 (default) host. For example
6tunnel -1 6668 irc6.net 6667
will be enough to connect to IPv6 irc server with
irc foobar localhost:6668
If you don't wish to run 6tunnel every time you want to show your
:c001: or :dead: IPv6 address on IRC, you can use -i parameter, which
makes 6tunnel ask your client for specified password. Just run
6tunnel -i dupa.8 31337 irc6.net 6667
and then type
irc foobar localhost:31337:dupa.8
If your IRC server requires you to send password, specify it with -I
parameter -- after successful proxy authentication 6tunnel will send it
to the server.
6tunnel can also be used as a tunnel for all other combinations of IPv4 and IPv6 endpoints. If remote host doesn't have any IPv6 addresses, 6tunnel will use the IPv4 one. In other cases, use -4 parameter which makes IPv4 address the preffered one. For IPv6-to-any tunnels use -6 which makes 6tunnel bind to IPv6 address.
Since version 0.11 released under the terms of GPL version 2 -- see release notes for details.