#!/bin/sh
ifconfig gif create
gifconfig gif0 inet 64.18.146.2 213.121.24.85
&& ifconfig gif0 inet6 2001:618:400::4012:922 prefixlen 128
&& route add -inet6 default fe80::%gif0
&& echo "IPv6 configuration completed" ||
{ echo "IPv6 configuration failed!" 1>&2; exit 1; }