It appears that just before midnight of Wed night, the nlams04.sixxs.net server is not tunneling IPv6 traffic anymore for me. The machine is however pingable and contactable on the IPv4 network. The status of the server is marked as up, however the traffic graphs of the server for the past day appear to be flattened to an absolute minimum although there is a slight trickle. I did not touch my configuration since yesterday and I found that the tunnel I had did not ping across the tunnel from my endpoint to the PoP. The output from tcpdump when I ping www.kame.net gives the following: 09:55:05.251708 IP 172.19.0.34.60494 > broker04.ams.nl.sixxs.net.ayiya: UDP, length 148 09:55:05.316671 IP broker04.ams.nl.sixxs.net > 172.19.0.34: ICMP broker04.ams.nl.sixxs.net udp port ayiya unreachable, length 184 09:55:06.266706 IP 172.19.0.34.60494 > broker04.ams.nl.sixxs.net.ayiya: UDP, length 148 09:55:06.335868 IP broker04.ams.nl.sixxs.net > 172.19.0.34: ICMP broker04.ams.nl.sixxs.net udp port ayiya unreachable, length 184