--- include/linux/netfilter_arp.h.orig	2007-01-20 00:31:16 -0600
+++ include/linux/netfilter_arp.h	2007-01-20 00:31:50 -0600
@@ -7,7 +7,9 @@
  * (C)2002 Rusty Russell IBM -- This code is GPL.
  */
 
+#ifdef __KERNEL__
 #include <linux/config.h>
+#endif
 #include <linux/netfilter.h>
 
 /* There is no PF_ARP. */