The Rainbow is running uIP 1.0 using a FOSSIL-based network device.  The FOSSIL driver is the venerable DECCOMM FOSSIL, which is compliant with the latest FOSSIL 5.0 standard.  The system is operating a 19200 bps over the Rainbow's serial port.



The GNU/Linux computer is connected to the Rainbow using the standard Linux SLIP interface, which was setup using the command:

    slattach -p slip -s 19200 /dev/ttyUSB0 &
    ifconfig sl0 192.168.2.1 pointopoint 192.168.2.2 up

The GNU/Linux system acts as a true proxy, as this uIP implementation does not currently support ARP.  

This setup is running only a web server.  However, other applications can be compiled using the uIP code!