One of the utilities from Microchip included in the distribution is
the "Ethernet Device Discoverer".
If you compiled the code with the STACK_USE_ANNOUNCE
macro defined, the stack includes a simple UDP daemon that
listens to the ANNOUNCE_PORT (defined as
30303 in the code) for a discovery request.
If the request is received, the daemon will send back to the requesting
host the current NetBIOS hostname, MAC and IP addresses.
Just run the executable MCHPDiscover.exe
available in the tools directory and you
will see a windows screen as in Figure 1 below.