12/12/97 - added -DIP_ONLY, -DSYN_ONLY - see Makefile or README
         - added logging of probed host IP address
         - added discriminator of IP type (UDP, TCP, GRE, ICMP, etc)
         - added flag breakdown (URG|SYN|FIN, etc)
		 - added IP_OPTIONS processing and warning for 1st option
