--- linux-2.6.28/net/ipv4/netfilter/ip_tables.c.orig	2009-12-14 15:57:12.000000000 +0100
+++ linux-2.6.28/net/ipv4/netfilter/ip_tables.c	2010-10-14 21:25:54.617595965 +0200
@@ -2255,6 +2255,7 @@
 		goto err5;
 
 	printk(KERN_INFO "ip_tables: (C) 2000-2006 Netfilter Core Team\n");
+	printk(KERN_INFO "ip_tables: compiled with sizeof(struct sk_buff) = %d\n", sizeof(struct sk_buff));
 	return 0;
 
 err5: