trying to use the ettercap for my wireless card instead of the RJ-45 port. My wireless card is set to eth1. RJ-45 port is eth0. I typed in ettercap -T -q -M ARP // // eth1. And even tried ettercap -T -q -M ARP // // eth0. the RJ-port works fine and I can poison my network. I just need it to be wireless instead of running a cord everywhere.