tunnel client is a Perl based script that tries to
offer an easier way of building up a tunnel to an
IPv6-over-IPv4 tunnelbroker. It's easy to extend it
to other tunnelbrokers, without additionally
modifing the source code.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.