Hi all, I would like to use raspberry as internet bridge from wifi (input) to ethernet cable (output) as a switch. In particular I want that raspberry not work as a router assigning an ip to devices connected to lan but as a simple bridge and the device take the IP address from the modem. So I would like that works in passive mode. Online I found many tutorials to do this in active mode (raspberry take internet from wifi and give connection to eth0 but assign new ip to devices) and not works as I desire.
Can some help me?
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You can't seamlessly bridge WiFi to Ethernet like that without an extension like WDS. It is a limitation of the WiFi protocol which is why the guides are making a separate subnet and doing NAT. The best you can do is a kludge involving MAC cloning but that only works if there is a single device on Ethernet.
I confirm there only one device on ethernet. How can I do as you suggested?