diff -ur --unidirectional-new-file skipsrc-1.0.orig/skip/common/skip_ah.c work.new/skip/common/skip_ah.c
--- skipsrc-1.0.orig/skip/common/skip_ah.c	Wed May 16 16:11:34 2001
+++ work.new/skip/common/skip_ah.c	Wed May 23 09:02:03 2001
@@ -342,6 +342,7 @@
 	ip->ip_ttl = 0;
 	ip->ip_tos = 0;
 	ip->ip_off = 0;
+ 	ip->ip_id = htons(ip->ip_id);
 
 	/*
 	 * Compute the AH Data
@@ -360,6 +361,7 @@
 	ip->ip_ttl = ip_ttl;
 	ip->ip_tos = ip_tos;
 	ip->ip_off = ip_off;
+ 	ip->ip_id = ntohs(ip->ip_id);
 
 	/*
 	 * Now, check if MAC is OK...