(usagi-users 03944) IPv6 tunnelling

Hi all,

        I have a lab setup of a router which is IPv6 enabled and i
want to connect this to the IPv6 network wherein i can ping6 to
yahoo.com or kame.net. According to the document i need to register to
a tunnel broker site (HE) and configure a 6to4 tunnel to the tunnel
broker and from there i can access yahoo.com .
    The problem is what local IPv4 address i need to give such that
IPv6 tunnel can be established .

Has anyone tried setting up IPv6 tunnel to access yahoo.com or kame.net.

Thanks and Regards,
Suprasad.