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-rw-r--r--sys/net/if_slvar.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/net/if_slvar.h b/sys/net/if_slvar.h
index b3626f3..a7926a7 100644
--- a/sys/net/if_slvar.h
+++ b/sys/net/if_slvar.h
@@ -32,9 +32,12 @@
*
* @(#)if_slvar.h 8.3 (Berkeley) 2/1/94
*
- * $Id$
+ * $Id: if_slvar.h,v 1.2 1994/08/02 07:46:22 davidg Exp $
*/
+#ifndef _NET_IF_SLVAR_H_
+#define _NET_IF_SLVAR_H_
+
/*
* Definitions for SLIP interface data structures
*
@@ -78,3 +81,5 @@ int sloutput __P((struct ifnet *,
void slstart __P((struct tty *));
int sltioctl __P((struct tty *, int, caddr_t, int));
#endif /* KERNEL */
+
+#endif
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