--- ../arpwatch.orig/util.h	Sun Oct  6 06:22:14 1996
+++ ./util.h	Wed Sep 10 13:03:27 2003
@@ -11,6 +11,9 @@
 extern char *arpfile;
 extern char *oldarpfile;
 extern char *ethercodes;
+extern char *etherfile;
+extern struct einfo einfo_table[];
+extern int et_cnt;

 extern u_char zero[6];
 extern u_char allones[6];