jurica / ddns-schlundtech

ddns-schlundtech

Simple self hosted ddns service for SchlundTech users, making use of the XML-Gateway.

I've created this to suite my needs, so it's far from being "feature complete" and some assumtions might break usage for others.

Feedback and contributions are always welcome!

What it does

1. Provides an unsecured http endpoint wating for update request.
2. On request:
   1. Zone Info (0205) is requested for the given domain.
      1. The given domain is split at the first "." into two parts for this.
      2. First part is interpreted as ressource record name (aka "subdomain").
      3. Second part is interpreted as "zone".
   2. Zone Update (Bulk) 0202001 is sent that
      1. deletes the existing ressource record
      2. creates a new one with the given IP

Currently there is no advances checks or logic etc. So it's initially required to setup the subdomain in the SchlundTech panel first.

Setup

Build

docker build -t ddns-schlundtech .

This will create an alpine based container with the binary.

Install

See docker-compose.yml for how to run the container.

Prepare a save location for the configuration file with the following content:

user = ""
password = ""
context = ""

This file needs to be bind mounted into the container, providing the necessary runtime configuration.

OpenWRT

I've just tested with OpenWRT. The following settings are working for me:

Section
Basic Settings
DDNS Service Provider	-- custom --
Lookup Hostname	{DOMAIN}
IP address version	IPv4-Address
Custom update-URL	{DOCKER_HOST}:8080?ip=[IP]&domain=[DOMAIN]
Custom update-script	empty
Domain	{DOMAIN}
Username	none
Password	none
Optional Encoded Parameter	empty
Optional Parameter	empty
Use HTTP Secure	unchecked
Advances Settings
IP address source	Interface
Interface	pppoe-WAN

Replace placeholders: {DOMAIN}, {DOCKER_HOST}