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-rw-r--r--sys/netinet/igmp.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/netinet/igmp.h b/sys/netinet/igmp.h
index bb3462d..52c672b 100644
--- a/sys/netinet/igmp.h
+++ b/sys/netinet/igmp.h
@@ -35,9 +35,12 @@
* SUCH DAMAGE.
*
* @(#)igmp.h 8.1 (Berkeley) 6/10/93
- * $Id$
+ * $Id: igmp.h,v 1.2 1994/08/02 07:48:07 davidg Exp $
*/
+#ifndef _NETINET_IGMP_H_
+#define _NETINET_IGMP_H_
+
/* Internet Group Management Protocol (IGMP) definitions. */
/*
@@ -58,3 +61,5 @@ struct igmp {
/* routing protocol */
#define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
+
+#endif
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