configuration of 6to4 tunnel on ubuntu

Hi!

I’ve got problem with configuration of 6to4 tunnel. I do it like they do here using iproute2

http://www.uibk.ac.at/linuxdoc/LDP/HOWTO/Linux+IPv6-HOWTO/configuring-ipv6to4-tunnels.html

And still I can’t ping ipv6.google.com: I’ ve got Destination unreachable: Address unreachable
What is wrong?

You are quite welcome here, but when you have an Ubuntu question, why do you ask on an openSUSE Forum?