Configuring IPv6 in the FRITZ!BoxThe FRITZ!Box already supports the internet protocols IPv4 and IPv6 in the factory settings. If possible, the FRITZ!Box establishes a native IPv4 and a native IPv6 internet connection, for example using Dual Stack. Only if the internet service provider no longer allows IPv4 internet connections, the FRITZ!Box will only establish an IPv6 internet connection, for...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Box-7690/573_Configuring-IPv6-in-the-FRITZ-Box/
You can cascade several Mesh Repeaters in the Mesh. This type of cascading makes it possible for you to extend your home network in a specific direction beyond the Wi-Fi range of a Mesh Repeater.
This means that not only can you connect your FRITZ!Repeater with the FRITZ!Box (Mesh Master), you can also connect it with an already existing Mesh Repeater. It does not matter whether the Mesh Repeater is another FRITZ!Repeater, a FRITZ!Box, or a FRITZ!Powerline adapter.
> https://en.avm.de/faqs/connecting-the-fritzrepeater-with-the-mesh-repeater/