My subnet and my tunnel end point are not reachable from other IPv6 hosts. Here the traceroute: aquila ~ # traceroute6 -n 2001:1418:1a0::1 traceroute to 2001:1418:1a0::1 (2001:1418:1a0::1) from 2002:a050:516a::1, 30 hops max, 16 byte packets 1 2001:620:0:c000::17 22.089 ms * * 2 2001:620:0:c025::2 29.493 ms 26.707 ms 39.939 ms 3 2001:620:0:c035::1 35.451 ms 23.962 ms 28.724 ms 4 2001:620:0:c03c::1 27.464 ms 22.965 ms 24.73 ms 5 2001:620:0:c00c::1 23.969 ms 26.212 ms 25.997 ms 6 2001:620:0:c06a::1 25.93 ms 24.208 ms 25.713 ms 7 2001:918:0:1a::1 27.971 ms 26.714 ms 24.728 ms 8 2001:918:0:9::1 52.445 ms 52.466 ms 51.922 ms 9 2001:440:eeee:ff7d::1 54.456 ms 54.18 ms 52.957 ms 10 2001:440:eeee:fffd::2 59.955 ms 52.184 ms 53.698 ms 11 2001:1418:1:200::9 51.459 ms 59.22 ms 51.919 ms 12 2001:1418:1:101::d 54.694 ms 53.95 ms 59.693 ms 13 2001:1418:10:2::2 53.723 ms !N 63.901 ms !N 58.441 ms !N aquila ~ # ping6 2001:1418:1a0::1 PING 2001:1418:1a0::1(2001:1418:1a0::1) 56 data bytes From 2001:1418:10:2::2 icmp_seq=1 Destination unreachable: No route From 2001:1418:10:2::2 icmp_seq=2 Destination unreachable: No route ^C --- 2001:1418:1a0::1 ping statistics --- 2 packets transmitted, 0 received, +2 errors, 100% packet loss, time 1002ms aquila ~ #