On 2021-09-12 7:37 p.m., Douglas McGarrett wrote:
I'm doing something wrong. I believe I have the MAC address of this computer and I still get the same error from wireshark. But there IS a router in the path, as I said above.
I just tried it with "ether host A4:EE:57:73:CB:85", that is your printer MAC address in that box. It started normally, as I expected. Of course, it didn't capture anything, as your printer is not on my network. So, it should not be generating any error. You can use any MAC address and it should still work. You just won't capture anything that's not on your network. Another thing you can try is to put nothing in that box and just hit enter, after you ensure you're on the right interface. It will then capture everything, and I mean everything, not just IP, that's passing through your network connection.