chello Broadband - IPv6 Team
Some links and info about IPv6 and Unix/Linux
A script using iproute2 to establish IPv6-in-IPv4 tunnels.
BGP setup using zebra
iproute2 - I don't remember the original location but the version I have can you find here
Copyright 2003 - UPC Distribution Services - IPv6 Team - Maintainer Steven Van Steen