[openwrt] add script to create ipv4 islands

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