it worked (1) nicely I had tried the last days the solutions of other ipv6 service (tunnelbroker (2), freenet6 (3), ...) but it never succeeded. Thank you for making such a simple tool ... (1) I started it first as non-root and it actually didn't. I didn't see the network device (2) didn't work at all (3) worked, but got reset like every 30 sec or so