 * implement a dgprintf function 
 * add ipx protocol
 * add igmp protocol (a proper implementation)
 * add arp protocol
 * PPP interface
 * win32 port
 * write/use a loadable kernel module which filters packets for me
 * add -lpcap support just for the fun of it
 * remove native byte orders from code generation, and modify test cases appropriately
 * make a pg output module
 * finish off perl/Tk interface prototype
 * Gtk+ interface
