@LucaMarch I completely agree. I was just on a chat session with support. I need the mesh network to allow IPv6 within my LAN. I am using pfSense for my router and firewall and Windows Server for AD, DHCP and DNS. I need IPv6 enabled on the 2.4GHz "Guest Network" I created to support several Home Automation devices (specifically Matter protocol devices). Their IoT feature doesn't work, but I managed to get Guest to work, however Matter Devices utilize IPv6 over WiFi, and according to the support person in the chat, this feature is only enabled if the Deco is running in Router mode.
That is a very poor design. The engineers need to realize that not everyone uses the Deco product as a router. Please support the full network stack regardless of the "mode" the Deco is in. I have Three X55s and two M5s. It would be nice if these actually did waht they should do and allow me to utilize a whole home mesh network to support ALL of my WiFi needs.