Indeed IPv4 CG-NAT of my mobile provider was the issue here. I will set up a VPN client on my raspberry pi and that should make it accessible.

The IP handed out is 10.0.173.131 instead and there seems to be no input forwarding rule from the public ip to 10.0.173.131 or the gateway (10.0.173.132) How am I supposed to reach the device form...

Hello, My Deco X50 G5 modem is connected to my rpi4 router using one of the 1Gbps RJ45 sockets. I switch both of them off during night time or when I leave the apartment. This means when I use them,...