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-rw-r--r--sys/net/slip.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/net/slip.h b/sys/net/slip.h
index d247287ae69..f9de719334d 100644
--- a/sys/net/slip.h
+++ b/sys/net/slip.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: slip.h,v 1.2 1997/02/24 13:34:05 niklas Exp $ */
+/* $OpenBSD: slip.h,v 1.3 2001/06/09 06:16:39 angelos Exp $ */
/* $NetBSD: slip.h,v 1.6 1994/06/29 06:36:53 cgd Exp $ */
/*-
@@ -36,6 +36,9 @@
* @(#)slip.h 8.1 (Berkeley) 2/12/94
*/
+#ifndef _NET_SLIP_H_
+#define _NET_SLIP_H_
+
/* Ioctls operating on SLIP ttys. */
#define SLIOCGUNIT _IOR('t', 88, int) /* get slip unit number */
@@ -52,3 +55,4 @@
#define SLIPDIR_IN 0 /* incoming */
#define SLIPDIR_OUT 1 /* outgoing */
+#endif /* _NET_SLIP_H_ */