diff --git a/ap/app/Script/scripts/ddns.sh b/ap/app/Script/scripts/ddns.sh
new file mode 100644
index 0000000..baac6c0
--- /dev/null
+++ b/ap/app/Script/scripts/ddns.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+#
+# $Id: ddns.sh,v 1.1 2007-09-24 09:34:52 winfred Exp $
+#
+# usage: ddns.sh
+#
+path_sh=`nv get path_sh`
+. $path_sh/global.sh
+echo "Info: ddns.sh start" >> $test_log
+
+srv=`nv get DDNSProvider`
+ddns=`nv get DDNS`
+ddns_hash=`nv get DDNS_Hash_Value`
+u=`nv get DDNSAccount`
+pw=`nv get DDNSPassword`
+ddns_enable=`nv get DDNS_Enable`
+
+killall -q inadyn
+rm -rf $path_conf/inadyn.status
+
+if [ "x$ddns_enable" = "x0" ]; then
+	exit 0
+fi
+if [ "x$srv" = "x" -o "x$srv" = "xnone" ]; then
+	exit 0
+fi
+if [ "x$ddns" = "x" -o "x$u" = "x" -o "x$pw" = "x" ]; then
+	exit 0
+fi
+
+# debug
+echo "srv=$srv"
+echo "ddns=$ddns"
+echo "ddns_hash=$ddns_hash"
+echo "u=$u"
+echo "pw=$pw"
+
+
+if [ "x$srv" = "xdyndns.org" ]; then
+	inadyn -u $u -p $pw -a $ddns --dyndns_system dyndns@$srv &
+elif [ "x$srv" = "xfreedns.afraid.org" ]; then
+	inadyn -u $u -p $pw -a $ddns,$ddns_hash --dyndns_system default@$srv &
+elif [ "x$srv" = "xzoneedit.com" ]; then
+	inadyn -u $u -p $pw -a $ddns --dyndns_system default@$srv &
+elif [ "x$srv" = "xno-ip.com" ]; then
+	inadyn -u $u -p $pw -a $ddns --dyndns_system default@$srv &
+else
+	inadyn -u $u -p $pw -a $ddns --dyndns_system default@$srv &
+	echo "unknown DDNS provider: $srv"
+fi
+