I've a problem i've installed tunnel 2001:1418:100:1d9::2/64 with aiccu and manual but i've a problem when i ping root@gmx-desktop:/etc# ping6 -I 2001:1418:100:1d9::2 www.sixxs.net PING www.sixxs.net(noc.sixxs.net) from 2001:1418:100:1d9::2 : 56 data bytes From cl-474.trn-01.it.sixxs.net icmp_seq=1 Destination unreachable: Address unreachable From cl-474.trn-01.it.sixxs.net icmp_seq=2 Destination unreachable: Address unreachable From cl-474.trn-01.it.sixxs.net icmp_seq=3 Destination unreachable: Address unreachable From cl-474.trn-01.it.sixxs.net icmp_seq=4 Destination unreachable: Address unreachable From cl-474.trn-01.it.sixxs.net icmp_seq=5 Destination unreachable: Address unreachable 2001:1418:100:1d9::/64 via :: dev sixxs metric 256 expires 21329189sec mtu 1480 advmss 1420 hoplimit 4294967295 2001:1418:100:1d9::/64 dev sixxs metric 1024 expires 21328564sec mtu 1480 advmss 1420 hoplimit 4294967295 2000::/3 via 2001:1418:100:1d9::1 dev sixxs metric 1 expires 21328566sec mtu 1480 advmss 1420 hoplimit 4294967295 fe80::/64 dev eth0 metric 256 expires 21090690sec mtu 1500 advmss 1220 hoplimit 4294967295 fe80::/64 via :: dev sixxs metric 256 expires 21328537sec mtu 1480 advmss 1420 hoplimit 4294967295 ff00::/8 dev eth0 metric 256 expires 21090690sec mtu 1500 advmss 1220 hoplimit 4294967295 ff00::/8 dev sixxs metric 256 expires 21328537sec mtu 1480 advmss 1420 hoplimit 4294967295 unreachable default dev lo proto none metric -1 error -101 advmss 1220 hoplimit 255 We Can help me ?