Followup: Checking the realtek site, they say that this LAN does not need any drivers. Here is their exact words: "The Ethernet hardware consists of two parts: a PHY chip, and a MAC chip. It's the MAC chip that requires the drivers. RTL8201x is a PHY only chip which does NOT need any driver at all. If you have RTL8201x in your computer system, there must be another MAC chip in the system too. Most likely, the MAC chip is embedded in the chipset. Please contact the board or computer provider to find out which MAC chip is in your system and how to get the drivers for it."
So what is the MAC chip in this board, and what drivers does it take?