From 00719a5e59f3f84a3b2e7a15e1dcb85066565cc8 Mon Sep 17 00:00:00 2001
From: Nico Schottelius <nico@nico-notebook.schottelius.org>
Date: Mon, 4 Jan 2021 16:40:38 +0100
Subject: [PATCH] [openwrt] add script to create ipv4 islands

---
 openwrt/openwrt-add-jool-ipv4island.sh | 31 ++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100755 openwrt/openwrt-add-jool-ipv4island.sh

diff --git a/openwrt/openwrt-add-jool-ipv4island.sh b/openwrt/openwrt-add-jool-ipv4island.sh
new file mode 100755
index 0000000..2b38865
--- /dev/null
+++ b/openwrt/openwrt-add-jool-ipv4island.sh
@@ -0,0 +1,31 @@
+#!/bin/sh
+
+if [ $# -ne 1 ]; then
+    echo "$0 ip-address nat64-prefix"
+    echo "    ip-address: where to find the OpenWRT device"
+    echo "    nat64-prefix: which network to use for INCOMING NAT64 (often 2a0a:e5c1:XXX:b00::/96"
+    echo "    ip4-address: where to map ipv6 traffic to (often: 192.168.1.42)"
+    exit 1
+fi
+
+my_ip=$1; shift
+nat64_prefix=$1; shift
+v4addr=$1; shift
+
+cat <<EOF | ssh -t "root@${my_ip}"
+set -x
+
+opkg update
+opkg install kmod-jool jool-tools
+
+cat > /etc/rc.local << EO2
+
+modprobe jool
+
+jool -4 -a ${v4addr}
+jool -6 ${nat64_prefix}
+EO2
+
+sh /etc/rc.local
+
+EOF