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-rw-r--r--sys/netinet/tcpip.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/netinet/tcpip.h b/sys/netinet/tcpip.h
index 3059c8e..a8a876c 100644
--- a/sys/netinet/tcpip.h
+++ b/sys/netinet/tcpip.h
@@ -31,9 +31,12 @@
* SUCH DAMAGE.
*
* @(#)tcpip.h 8.1 (Berkeley) 6/10/93
- * $Id$
+ * $Id: tcpip.h,v 1.2 1994/08/02 07:49:19 davidg Exp $
*/
+#ifndef _NETINET_TCPIP_H_
+#define _NETINET_TCPIP_H_
+
/*
* Tcp+ip header, after ip options removed.
*/
@@ -58,3 +61,5 @@ struct tcpiphdr {
#define ti_win ti_t.th_win
#define ti_sum ti_t.th_sum
#define ti_urp ti_t.th_urp
+
+#endif
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