--- sn_packetstructs.h.orig	Fri Apr 18 02:33:58 1997
+++ sn_packetstructs.h	Fri Apr  3 20:41:08 1998
@@ -48,4 +48,5 @@
 {
 	int IP_len, TCP_len, ICMP_len, UDP_len;         /* header lengths */ 
 	int DATA_len;
+	char FRAG_nf;									/* not the first fragment */
 };