--- linux-2.6.19.2/net/ipv4/netfilter/ip_tables.c	2010-09-10 12:37:59.557532001 +0200
+++ linux-2.6.19.2/net/ipv4/netfilter/ip_tables.c	2010-09-10 12:35:12.817532002 +0200
@@ -2195,6 +2195,7 @@
 		goto err5;
 
 	printk("ip_tables: (C) 2000-2006 Netfilter Core Team\n");
+	printk("ip_tables: compiled with sizeof(struct sk_buff) = %d\n", sizeof(struct sk_buff));
 	return 0;
 
 err5: