ifconfig sit0 up
ifconfig sit0 inet6 tunnel ::216.218.221.6
ifconfig sit1 up
ifconfig sit1 inet6 add 2001:470:18:7f5::2/64
route -A inet6 add ::/0 dev sit1
modprobe ipv6
ip tunnel add he-ipv6 mode sit remote 216.218.221.6 local 120.32.112.143 ttl 255
ip link set he-ipv6 up
ip addr add 2001:470:18:7f5::2/64 dev he-ipv6
ip route add ::/0 dev he-ipv6
ip -f inet6 addr
aWZjb25maWcgc2l0MCB1cAppZmNvbmZpZyBzaXQwIGluZXQ2IHR1bm5lbCA6OjIxNi4yMTguMjIxLjYKaWZjb25maWcgc2l0MSB1cAppZmNvbmZpZyBzaXQxIGluZXQ2IGFkZCAyMDAxOjQ3MDoxODo3ZjU6OjIvNjQKcm91dGUgLUEgaW5ldDYgYWRkIDo6LzAgZGV2IHNpdDEKbW9kcHJvYmUgaXB2NgppcCB0dW5uZWwgYWRkIGhlLWlwdjYgbW9kZSBzaXQgcmVtb3RlIDIxNi4yMTguMjIxLjYgbG9jYWwgMTIwLjMyLjExMi4xNDMgdHRsIDI1NQppcCBsaW5rIHNldCBoZS1pcHY2IHVwCmlwIGFkZHIgYWRkIDIwMDE6NDcwOjE4OjdmNTo6Mi82NCBkZXYgaGUtaXB2NgppcCByb3V0ZSBhZGQgOjovMCBkZXYgaGUtaXB2NgppcCAtZiBpbmV0NiBhZGRyCg==