[jool] begin to document

openwrt/openwrt-add-jool-ipv4island.sh

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+# The purpose of this setup is to ...
+
 if [ $# -ne 2 ]; then
     echo "$0 ip-address nat64-prefix"
     echo "    ip-address: where to find the OpenWRT device"

openwrt/openwrt-add-jool.sh

@@ -8,8 +8,7 @@ if [ $# -ne 1 ]; then
     exit 1
 fi
 
-my_ip=$1; shift
-nat64_prefix=$1; shift
+my_ip=$1; shiftnat64_prefix=$1; shift
 
 cat <<EOF | ssh -t "root@${my_ip}"
 set -x