For the SGMII port of the ML510 board, the second TEMAC from an xps_ll_temac is used to connect to the external PHY. Lwip seems to assume that I am using the first TEMAC from the xps_ll_temac. How do I get Lwip to see my TEMAC when I am using only the second TEMAC?
Extract the patch into your project directory. This will create a drivers directory with the updated TEMAC driver. Clean your software, libraries, and rerun to have the tools pick up the new driver.