diff --git a/bash/sddns.sh b/bash/sddns.sh
new file mode 100755
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--- /dev/null
+++ b/bash/sddns.sh
@@ -0,0 +1,196 @@
+#!/bin/bash
+##
+ # SDDNS update script
+ #
+ # @copyright	2013 Steffen Vogel
+ # @license	http://www.gnu.org/licenses/gpl.txt GNU Public License
+ # @author	Steffen Vogel <post@steffenvogel.de>
+ # @link	http://www.steffenvogel.de
+ ##
+##
+ # This file is part of sddns
+ #
+ # sddns is free software: you can redistribute it and/or modify
+ # it under the terms of the GNU General Public License as published by
+ # the Free Software Foundation, either version 3 of the License, or
+ # any later version.
+ #
+ # sddns is distributed in the hope that it will be useful,
+ # but WITHOUT ANY WARRANTY; without even the implied warranty of
+ # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ # GNU General Public License for more details.
+ #
+ # You should have received a copy of the GNU General Public License
+ # along with sddns. If not, see <http://www.gnu.org/licenses/>.
+ ##
+
+# default options
+VER=4
+TTL=120
+USER=anonymous
+ZONE=0l.de
+HOST=$(hostname)
+
+function usage {
+	cat <<-EOF
+		Usage: sddns.sh [-4,-6] [-p PASS] [-t TTL] [-i IF] [-z ZONE] [-d] [-D] [HOST]
+
+		Options:
+		  -u	optional user for admin permissions
+		  -p	is the password from the webservice otherwise prompted
+		  -t	is the time to live in seconds
+		  -i	use the ip from this nic
+		  -z	nameserver zone
+		  -4	update A record (default)
+		  -6	update AAAA record
+		  -D	live monitor interface for changing addresses
+		  -d	enable verbose output
+		  -h	show this help
+
+		  HOST is the hostname which you want to update
+		    defaults to the local hostname
+
+		Example: sddns.sh -6 -t 3600 -i eth0 sea
+
+		written by Steffen Vogel <post@steffenvogel.de>
+	EOF
+}
+
+function deps() {
+	FAILED=0
+	for DEP in $*; do
+		if ! which ${DEP} &>/dev/null; then
+			echo -e "This script requires ${DEP} to run but it is not installed."
+			((FAILED++))
+		fi
+	done
+	return ${FAILED}
+}
+
+function parse() {
+	if [[ $* =~ ${RE} && ${BASH_REMATCH[1]} == "${IF}" ]]; then
+		echo ${BASH_REMATCH[2]}
+	fi
+}
+
+function update() {
+	RDATA=$1
+	TYPE=$2
+
+	WAIT=1
+	URL="http://d.0l.de/update.txt?host=${HOST}&zone=${ZONE}&ttl=${TTL}&class=IN&type=${TYPE}&rdata=${RDATA}&debug=${DEBUG}"
+
+	if (( $DEBUG )); then echo "Updating record: $URL"; fi
+
+	while true; do
+		CODE=$(curl -w %{http_code} -s -o /dev/stderr -u "${USER}:${PASS}" "$URL") 2>&1
+
+		if [ $CODE -eq 0 ]; then
+			if (( $DEBUG )); then echo "Sleeping for ${WAIT} secs..."; fi
+			sleep $WAIT; # wait until interface is ready
+			WAIT=$(($WAIT*2))
+		elif [ $CODE -ge 500 ]; then
+			if (( $DEBUG )); then echo "Request failed. Aborting.."; fi
+			return 1
+		else
+			break
+		fi
+	done
+
+	return 0
+}
+
+function get() {
+	curl -${VER} -s http://d.0l.de/ip.txt | cut -f 3
+}
+
+function query() {
+	dig $TYPE $HOST.$ZONE @ns0.0l.de +short
+}
+
+# check dependencies
+if ! deps dig curl ip sed cut; then
+	echo -e "Unmet dependencies: Aborting!"
+	exit 1
+fi
+
+# parse arguments
+while getopts "z:p:u:t:i:Dhd46" OPT; do
+	case ${OPT} in
+		p)
+			PASS=${OPTARG}
+			;;
+		u)
+			USER=${OPTARG}
+			;;
+		t)
+			TTL=${OPTARG}
+			;;
+		4)
+			VER=4
+			;;
+		6)
+			VER=6
+			;;
+		i)
+			IF=${OPTARG}
+			;;
+		D)
+			DAEMON=1
+			;;
+		d)
+			DEBUG=${OPTARG:-5}
+			;;
+		h)
+			usage
+			exit 0
+			;;
+		*)
+			usage
+			exit 1
+	esac
+done
+
+# clear all options and reset the command line
+shift $((OPTIND-1))
+
+# parsing host 
+if [ -n "$1" ]; then
+	HOST=$1
+else
+	echo -e "missing host"
+	exit 1
+fi
+
+# prompting for password
+if [ -z "${PASS}" ]; then
+	read -s -p "password: " PASS
+	echo
+fi
+
+# setup regular expression and record type
+if [ ${VER} -eq 4 ]; then
+	RE='^[0-9]+: +([^ ]+) +inet +([^/]+)/([0-9]+) brd [^ ]+ +scope +global'
+	TYPE="A"
+else
+	RE='^[0-9]+: +([^ ]+) +inet6 +([^/]+)/([0-9]+) +scope +global'
+	TYPE="AAAA"
+fi
+
+# lets go
+if [ -z "${IF}" ]; then
+	IP=$(get)
+	if [ -n "${IP}" ]; then
+		update "${IP}" "${TYPE}" || exit
+	else
+		echo -e "failed to get ip from net"
+		exit 1
+	fi
+else
+	while read LINE; do
+		IP=$(parse ${LINE})
+		if [ -n "${IP}" ]; then
+			update "${IP}" "${TYPE}" || exit
+		fi
+	done < <(ip -o -${VER} address show && (( ${DAEMON} )) && ip -o -${VER} monitor address)
+fi