I am still trying to get transparent proxying working to no avail.
I am doing network diagnostics on client/server and that error is the only thing I have managed to get to show up on mitmproxy output when I ran
# netcat -z -n -v 8.8.8.8 80
from the client.
# netcat -u 8.8.8.8 80
didn’t work at all and just hung.
So what does the endpoint error mean? could it get me closer to solving this infernal mystery of why I can’t get transparent proxying working?