Going through this thread:
proxy ARP WiFi bridge Raspberry
Ingo´s solution is working fine for me but I´m looking for an extra... With this WiFi bridge, I want to use an addadded USB-Ethernet adapter (with a fixed IP address). Both the bridge and adapter work separately, but if I plug the cable in the new adapter, I lose the internet connection in my bridge. The strange thing is that I´m able to go until the router, but I can not go outside. And as I toldsaid before without any cable plugged in everything is working well.
Does anyone know how to avoid this problem?