Dear SixXS team, I currently don't get any responses to ping requests on 2001:1620:2005:4::2, i.e. the PoP endpoint of my tunnel T51157. Neither from what looks like a properly configured tunnel, nor from the outside. aiccu test on my router succeeds until step 6, where it tries to "ping the IPv6 Remote/PoP Inner Tunnel Endpoint (2001:1620:f00:dc::1)". Ping reports: PING 2001:1620:f00:dc::1(2001:1620:f00:dc::1) 56 data bytes --- 2001:1620:f00:dc::1 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2005ms Upon startup, aiccu correctly reports: "Successfully retrieved tunnel information for T51157" and configures the interfaces. From a random online ping6 service, I get "No route" for the very same IP(v6). IPv6 Ping Output: PING 2001:1620:f00:dc::1(2001:1620:f00:dc::1) 32 data bytes From 2001:1620:2005:4::2 icmp_seq=0 Destination unreachable: No route From 2001:1620:2005:4::2 icmp_seq=1 Destination unreachable: No route From 2001:1620:2005:4::2 icmp_seq=2 Destination unreachable: No route From 2001:1620:2005:4::2 icmp_seq=3 Destination unreachable: No route --- 2001:1620:f00:dc::1 ping statistics --- 4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3009ms I didn't touch my router's configuration for a while (last month or so). During that period of time the tunnel stats report a reasonable ping time. So I currently suspect a failure on the side of the PoPs. Kind Regards Markus Wanner