hanks Fraser. I can't put the Fritzbox into bridge mode directly. When I use exposed host I don't have an open NAT with the R3. It's only open when I forward port 3074 from the Fritzbox to Netduma. I can only activate PPPoE passthrough on the Fritzbox but I can't get a connection on the R3. On my PC a LAN cable appears at the bottom instead of the world when there's no connection but, as I said, I can't get onto the internet. Maybe the IP address has to be in the Fritzbox range instead of 192.168.77.1?