tg@blau:~ $ traceroute6 bugs.debian.org traceroute6 to bugs.debian.org (2001:858:2:2:214:22ff:fe11:ac9e) from 2a01:198:25d:0:20a:e4ff:fe32:6598, 64 hops max, 12 byte packets 1 herc 0.636 ms 0.564 ms 0.492 ms 2 gw-239.dus-01.de.sixxs.net 9.987 ms 9.821 ms 9.476 ms 3 sixxs-dus.dus.speedpartner.de 9.241 ms !N 9.814 ms !N 9.734 ms !N I unfortunately do not know whether the problem is new, as some Debian boxen only received IPv6 connectivity recently and I might have connected to them using IPv4 first, but its a few days already. Heres one from/via deham01: tg@eurynome:~ $ traceroute6 bugs.debian.org traceroute6 to bugs.debian.org (2001:858:2:2:214:22ff:fe11:ac9e) from 2001:6f8:94d:10::10, 64 hops max, 12 byte packets 1 gw-76.ham-01.de.sixxs.net 59.221 ms 25.46 ms 27.206 ms 2 vl101.cr21.isham.de.easynet.net 25.247 ms 23.763 ms 32.045 ms 3 2001:6f8:1:0:87:86:71:240 32.965 ms 23.973 ms 24.806 ms 4 2001:6f8:1:0:87:86:77:127 24.183 ms 24.571 ms 24.88 ms 5 2001:6f8:1:0:87:86:77:131 24.962 ms 26.427 ms 26.117 ms 6 hmb-s3-rou-1041.DE.eurorings.net 27.572 ms 80.439 ms 81.178 ms 7 * * * 8 * * * 9 ip6-te3-3-c1.vivi.sil.at 101.742 ms 77.782 ms 57.225 ms 10 Ge2-2-fum.core.sil.at 93.509 ms 80.257 ms 63.493 ms 11 ip6-te3-3-c1.vivi.sil.at 116.683 ms 128.683 ms 74.173 ms 12 ip6-te1-4-c1.oe3.sil.at 69.797 ms 70.748 ms 63.207 ms 13 lindberg.debian.org 63.8 ms 64.937 ms 99.703 ms The problem can be seen best in Lynx, where I need to press z to let it retry with v4 on every page load. For the sake of completeness: tg@blau:~ $ traceroute6 -n bugs.debian.org traceroute6 to bugs.debian.org (2001:858:2:2:214:22ff:fe11:ac9e) from 2a01:198:25d:0:20a:e4ff:fe32:6598, 64 hops max, 12 byte packets 1 2a01:198:25d:0:202:b3ff:feb7:54e8 0.732 ms 0.547 ms 1.115 ms 2 2a01:198:200:ee::1 9.488 ms 10.093 ms 10.712 ms 3 2a01:198:200::1 9.978 ms !N 9.965 ms !N 9.981 ms !N tg@blau:~ $ ping6 www.kame.net PING6(56=40+8+8 bytes) 2a01:198:25d:0:20a:e4ff:fe32:6598 --> 2001:200:dff:fff1:216:3eff:feb1:44d7 16 bytes from 2001:200:dff:fff1:216:3eff:feb1:44d7, icmp_seq=0 hlim=48 time=300.995 ms 16 bytes from 2001:200:dff:fff1:216:3eff:feb1:44d7, icmp_seq=1 hlim=48 time=290.302 ms 16 bytes from 2001:200:dff:fff1:216:3eff:feb1:44d7, icmp_seq=2 hlim=48 time=290.343 ms ^C --- orange.kame.net ping6 statistics --- 3 packets transmitted, 3 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 290.302/293.880/300.995/5.031 ms So everything else is working