#!/bin/sh

if [ $# -ne 2 ]; then
    echo "$0 ip-address nat64-prefix"
    echo "    ip-address: where to find the OpenWRT device"
    echo "    nat64-prefix: how to reach the ipv4 hosts"
    echo ""
    echo "Example:"
    echo "$0 2a0a:e5c1:301::42 2a0a:e5c1:301:b00::/96"
    echo ""
    echo "This maps 2a0a:e5c1:301:b00::/96 to the IPv4 addresses on the device 2a0a:e5c1:301::42"
    exit 1
fi

my_ip=$1; shift
nat64_prefix=$1; shift

cat <<EOF | ssh -t "root@${my_ip}"
set -x

opkg update
opkg install kmod-jool jool-tools


cat <<EO2 > /etc/rc.local

sysctl -w net.ipv6.conf.all.accept_ra=2

modprobe jool

jool instance add default --netfilter -6 ${nat64_prefix}

EO2

# OpenWRT has 192.168.1. assigned on LAN by default
# Probably not even necessary
# jool -4 -a 192.168.1.1

sh /etc/rc.local

EOF