Hi, I'm having trouble getting the tunnel working with FreeBSD. I'm not getting anything back from the POP. xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 options=9<RXCSUM,VLAN_MTU> inet 192.168.0.2 netmask 0xffffff00 broadcast 192.168.0.255 inet6 fe80::204:75ff:feeb:5fdf%xl0 prefixlen 64 scopeid 0x1 inet6 2002:c0a8:2:2::1 prefixlen 64 ether 00:04:75:eb:5f:df media: Ethernet autoselect (100baseTX <full-duplex>) status: active gif0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280 tunnel inet 192.168.0.2 --> 62.78.96.38 inet6 2001:14b8:100:5f::2 --> 2001:14b8:100:5f::1 prefixlen 128 inet6 fe80::204:75ff:feeb:5fdf%gif0 prefixlen 64 scopeid 0x4 The machine is behind a NAT, as you can see from the IP address. If I configure the gif0 tunnel to use 192.88.99.1 (6to4 anycast) everything works fine and I can ping hosts in the ipv6 world. Thus I don't think it's a NAT problem either. Any ideas what could be the problem? Using the Finnet POP btw. Thanks! Janne