A recent guide on configuring OpenWRT DDNS for freedns.afraid.org highlights the complexities of setting up dynamic DNS updates. Freedns.afraid.org offers an alternative to traditional DDNS services that require periodic renewals, providing a more user-friendly experience. However, the setup process can be confusing, especially when it comes to using the "Direct URL" or the typical ddns client URLs.

The main challenge lies in understanding the differences between these two options and how they interact with OpenWRT's DDNS client. The "Direct URL" is designed for use within a NAT network, while the typical ddns client URLs require HTTP basic authentication and support various URL parameters.

To ensure successful setup, users must consider whether their OpenWRT router is behind one or more NAT layers. If so, using the default wan option will not work, and an alternative approach is necessary.

Source: https://dev.to/hubschrauber/configuring-openwrt-ddns-for-freednsafraidorg-4caa