Hi I cannot ping my own network interface card on a host, can someone explain me why. Here is my ifconfig and ip -6 route output: ## ip -6 route: eth0 Link encap:Ethernet HWaddr 00:0A:E6:D6:F8:F5 inet addr:<privacy...> Bcast:0.0.0.0 Mask:255.255.255.248 inet6 addr: 2001:16d8:ff6e:6::3/64 Scope:Global inet6 addr: fe80::20a:e6ff:fed6:f8f5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8432616 errors:0 dropped:0 overruns:0 frame:0 TX packets:4832685 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:280932443 (267.9 Mb) TX bytes:1114156786 (1062.5 Mb) Interrupt:11 Base address:0xd400 sit1 Link encap:IPv6-in-IPv4 inet6 addr: 2001:16d8:ff6e:1::2/64 Scope:Global inet6 addr: fe80::8382:8d8b/128 Scope:Link UP POINTOPOINT RUNNING NOARP MTU:1480 Metric:1 RX packets:108 errors:0 dropped:0 overruns:0 frame:0 TX packets:144 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:11952 (11.6 Kb) TX bytes:17400 (16.9 Kb) lo .... ## ip -6 route: 2001:16d8:ff6e:1::/64 via :: dev sit1 metric 256 expires 21332751sec mtu 1480 advmss 1420 metric10 4294967295 2001:16d8:ff6e:6::/64 dev eth0 metric 256 expires 21333885sec mtu 1500 advmss 1440 metric10 4294967295 fe80::/64 dev eth0 metric 256 expires 21151569sec mtu 1500 advmss 1440 metric10 4294967295 fe80::/64 via :: dev sit1 metric 256 expires 21332751sec mtu 1480 advmss 1420 metric10 4294967295 ff00::/8 dev eth0 metric 256 expires 21151569sec mtu 1500 advmss 1440 metric10 4294967295 ff00::/8 dev sit1 metric 256 expires 21332751sec mtu 1480 advmss 1420 metric10 4294967295 default via 2001:16d8:ff6e:1::1 dev sit1 metric 1024 expires 21333970sec mtu 1480 advmss 1420 metric10 4294967295 I can ping6 www.kame.net (over the sixxs tunnel). greetings fabian zeindl