sixxs     Link encap:IPv6-in-IPv4
          inet6 addr: 2001:16d8:ff9d::1/48 Scope:Global
          inet6 addr: 2001:16d8:ff00:103::2/64 Scope:Global
          inet6 addr: fe80::a00:101/128 Scope:Link
          UP POINTOPOINT RUNNING NOARP  MTU:1280  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)