Index: mms-conntrack-nat/linux-2.6.11/include/linux/netfilter_ipv4/ip_conntrack_mms.h
===================================================================
--- mms-conntrack-nat/linux-2.6.11/include/linux/netfilter_ipv4/ip_conntrack_mms.h	(revision 3889)
+++ mms-conntrack-nat/linux-2.6.11/include/linux/netfilter_ipv4/ip_conntrack_mms.h	(working copy)
@@ -30,9 +30,11 @@
 };
 
 struct ip_conntrack_expect;
+#ifdef __KERNEL__
 extern unsigned int (*ip_nat_mms_hook)(struct sk_buff **pskb,
 				       enum ip_conntrack_info ctinfo,
 				       const struct ip_ct_mms_expect *exp_mms_info,
 				       struct ip_conntrack_expect *exp);
+#endif
 
 #endif /* _IP_CONNTRACK_MMS_H */