#!/bin/sh

export PATH=/sbin:/bin:/usr/sbin:/usr/bin

INET=$(ip addr show dev {{ interface }} | \
    egrep -oe '[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+' | \
    head -n 1)
PREFIX=$(printf "2002:%02x%02x:%02x%02x:\n" $(echo $INET | tr . ' '))

ip tunnel add 6to4 mode sit remote 192.88.99.1 local $INET
ip addr add "${PREFIX}:1/128" dev 6to4
ip link set 6to4 up
ip route add 2000::/3 dev 6to4 via ::192.88.99.1