I have my domain hosted with STRATO. My routing device at home is an AVM Fritz!Box 7490. I want - since i finally got a decent upstream bandwidth - to have a nice versatile dynamic DNS to point 'home'. STRATO offers DynDNS, but it is v4 only. Also, setting the DynDNS flag for a (sub-)domain automatically disables the setting of all other records (i.e. HINFO, TXT, …).
If the strange error that dynamic DNS is know in an unknown or failed state pisses you off (like it pisses me off), you can just set the dynamic DNS provider to 'custom' and have 127.0.0.1 as update URL. The error will disappear.
TADAA, you now have versatile v4/v6 dynamic DNS for your own domain with a domain provider that doesn't really support versatility in terms of dynamic DNS.