H8S/2472 Embedded Ethernet
Renesas has submitted a version of Adam Dunkels uIP TCP/IP stack for embedded processors to the public domain. This version works on the new H8S/2472 with Embedded Ethernet MAC.
The code port is released and can be downloaded from here - near the bottom of the page:
http://www.sics.se/~adam/uip/index.php/Ports
This version works with the embedded Ethernet MAC peripheral of the H8S/2472.