Hello! I have 3 computers: A (client), B Gateway, C Server. I want to intercept A packets going to C in B, change destination IP to local (B) and process this packets in B. This is easy. The problem is with the packets originating in B. I want to change their source IP address and their MAC simulating A IP and MAC. I want to do a transparent process. B send packets to C but C thinks that they come from A (IP and MAC) The IP is also easy with libipq but how can I change the source MAC to match A's MAC? Thanks!
