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diff --git a/i686-linux-gnu-4.7/usr/include/linux/netfilter/nf_conntrack_tuple_common.h b/i686-linux-gnu-4.7/usr/include/linux/netfilter/nf_conntrack_tuple_common.h
new file mode 100644
index 0000000..a7d2d7c
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/netfilter/nf_conntrack_tuple_common.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _NF_CONNTRACK_TUPLE_COMMON_H
+#define _NF_CONNTRACK_TUPLE_COMMON_H
+
+#include <linux/types.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter/nf_conntrack_common.h> /* IP_CT_IS_REPLY */
+
+enum ip_conntrack_dir {
+	IP_CT_DIR_ORIGINAL,
+	IP_CT_DIR_REPLY,
+	IP_CT_DIR_MAX
+};
+
+/* The protocol-specific manipulable parts of the tuple: always in
+ * network order
+ */
+union nf_conntrack_man_proto {
+	/* Add other protocols here. */
+	__be16 all;
+
+	struct {
+		__be16 port;
+	} tcp;
+	struct {
+		__be16 port;
+	} udp;
+	struct {
+		__be16 id;
+	} icmp;
+	struct {
+		__be16 port;
+	} dccp;
+	struct {
+		__be16 port;
+	} sctp;
+	struct {
+		__be16 key;	/* GRE key is 32bit, PPtP only uses 16bit */
+	} gre;
+};
+
+#define CTINFO2DIR(ctinfo) ((ctinfo) >= IP_CT_IS_REPLY ? IP_CT_DIR_REPLY : IP_CT_DIR_ORIGINAL)
+
+#endif /* _NF_CONNTRACK_TUPLE_COMMON_H */