ENC28 + G120 not getting a IP when used behind a router

Hi.

I’m using my G120 + ENC28J60 behind a router. It works most of the time but now i tested a new router (Dlink DIR-655) and I can’t get an IP. I do get a strange error message from the lwip stack: enc28j6 0_lwip_open: check duplex se tting

The device does not seem to be recogniced by the router (it does not appear on the connected devices list).

The mac address is valid.

Does anyone have any suggestion on what the problem could be?

Edit:

Seems to be a known problem.
https://www.ghielectronics.com/community/forum/topic?id=12032&page=2

will this issue be addressed?