Hello, I'm desperately trying to get a heartbeat-tunnel to work with my Gentoo Box (Kernel 2.6.8.1). I tried to follow the Gentoo-IPV6 guide and that forum post: http://forums.gentoo.org/viewtopic.php?t=202277 This is the output I get: tb02 root # ip tunnel add sixxs mode sit local 132.187.247.3 remote 212.224.0.188 tb02 root # ip link set sixxs up tb02 root # ip link set mtu 1280 dev sixxs tb02 root # ip tunnel change sixxs ttl 64 tb02 root # ip -6 addr add 2001:6f8:900:ff::2 dev sixxs tb02 root # ip -6 ro add default via 2001:6f8:900:ff::1 dev sixxs RTNETLINK answers: No route to host :? Even after I start heartbeat-client I cannot ping6 anything except my own IP (2001:6f8:900:ff::2). tcpdump tells me that there isn't any activity on eth0 (or any other interface) when I type the above. What is it I'm doing wrong. Hours of searching didn't give me a clou... ;( I'd be happy for any Idea I could try! Thorsten Edit: P.S: Yes, my time is ntp-synced, and I can get a tunnel when I boot into winXP, but something must be wrong with my linux setup...