--- net_read.c.orig	2002-05-21 19:39:20.000000000 -0500
+++ net_read.c	2010-08-05 18:12:29.000000000 -0500
@@ -146,7 +146,7 @@
 pcap_t *pd;
 int pcapfd;
 
-static int packet_length;		/* length of current packet */
+int packet_length;		/* length of current packet */
 
 #define STAT_ADD(name) \
     { tcpdstat[(name)].packets++; tcpdstat[(name)].bytes += packet_length; }