I own a Fritzbox and use the manual update-URL with success.
The delegated /56 prefix and the ipv4 gets update regulartly.
My problem is, that the /56 is delegated to other routers. So I want to update the ipv6-prefix of the zone to lets say the /64-prefix out of the /56-prefix with the id 4.
I couldn’t find this feature so is that possible or not?
If that would be possible this service would be what I was looking for so long! I got it working by using a Server inside the ID 4 prefix and updating the prefix that way. But thats more like a workaround, because I like it more when it gets managed by the router which gets the prefix in the first place.