This project responds to each request with a good return code defined by the DynDNS API. I created this to configure a DynDNS Service to use WireGuard on a Fritz!Box. Unfortunately AVM decided that either a MyFritz or DynDNS Account is required to use WireGuard even just as a VPN Client. Well 🤷.

• Navigate to the DynDNS Config on your FritzBox Web interface
• enter the following as your Update-URL and a domain name which resolves to 127.0.0.1, for example: 127-0-0-1.sslip.io
• use whatever you want for the remaining entries

https://<username>:<pass>@dummy-dyndns.avocado.workers.dev/v3/update?hostname=<domain>&v4=<ipaddr>&v6=<ip6addr>

• you're able to configure WireGuard now, enjoy