I have a board with a realtek 8169 chip and am using a driver for the realtek 8111 family.  

There are two ethernet ports on this board.  Everything seems to work fine except under heavy load the ports "hang" and 
stop transmitting, etc.

The driver was compiled and came from an older post (10/2007) calling it experimental.  The "poster " was Hugh Brown.

Does anyone know where the source to this driver is?  I assume it is in one of the BSPs but which?

Thanx
Tim