same here ...i guess the call ettercap made toward the interface is reject due to the incosistent physical interface wich in this case is a virtual adapter. ettercap is looking for an interface to modify but a physical one , so it calls the relative address "layer type 0xfffe" wich does not exist. not a dev .....i'm afraid this is as far as i can go with troubleshooting.
Please report an issue on github. This forum is not active anymore https://github.com/Ettercap/ettercap/issues...
can you please try again with ettercap 0.8.0 and kali linux? otherwise please report...
Hello. I have found if the replace with different length string, there will be mistake...