--- Net2/sys/vcmd.h	2018/04/24 18:03:58	1.1
+++ Net2/sys/vcmd.h	2018/04/24 18:16:28	1.1.1.2
@@ -30,9 +30,13 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)vcmd.h	7.4 (Berkeley) 5/5/91
+ *	from: @(#)vcmd.h	7.4 (Berkeley) 5/5/91
+ *	vcmd.h,v 1.3 1993/05/20 16:23:48 cgd Exp
  */
 
+#ifndef _SYS_VCMD_H_
+#define _SYS_VCMD_H_
+
 #include <sys/ioctl.h>
 
 #define	VPRINT		0100
@@ -41,3 +45,5 @@
 
 #define	VGETSTATE	_IOR('v', 0, int)
 #define	VSETSTATE	_IOW('v', 1, int)
+
+#endif /* !_SYS_VCMD_H_ */