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Sheogorath's Blog

Depending on the time of the day a friend, a colleague, a wise guy. The beauty of the world is its sense of humor to show humans their way by letting them search their own.

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FRITZ!Box link local fallback

Today I learned that FRITZ!Boxes have an IPv4 link-local fallback address, in case a device doesn’t catch any DHCP configuration. According to the documentation a FRITZ!Box is also always reachable through So if you device is ever configured using auto-IP and assigns itself an IP address from the IP range, you can easily reach your FRITZ!Box and enable DHCP, without the need to configure a static IP address.

I came across this after reading w4tsn’s article about his IoT Fallback IP setup and thought that the IPv4 range would fit better for such a configuration. Some quick research if/how others might implement it, made FRITZ!Boxes show up.