This is probably a pretty stupid question, but anybody here try using
the open emac core in loopback mode?

I have it transmitting and receiving on the wire perfectly, but it
fails in loopback mode MOST of the time, not all the time. I'm
beginning to suspect a bug, because the transmit is entirely reliable,
and so is the receive as long as it's on a wire. I'm very confused.

So, I need a sanity check - who else has tested the open core emac in
loopback mode? Perhaps I'm missing something in the documentation?

Thank you,
-Rich