diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index 2a17fb7fadde..ed9222d573c6 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: sysctl.h,v 1.59 2000/11/20 01:46:56 simonb Exp $	*/
+/*	$NetBSD: sysctl.h,v 1.60 2001/01/09 21:30:25 fvdl Exp $	*/
 
 /*
  * Copyright (c) 1989, 1993
@@ -91,7 +91,8 @@ struct ctlname {
 #define	CTL_USER	8		/* user-level */
 #define	CTL_DDB		9		/* in-kernel debugger */
 #define	CTL_PROC	10		/* per-proc attr */
-#define	CTL_MAXID	11		/* number of valid top-level ids */
+#define	CTL_VENDOR	11		/* vendor-specific data */
+#define	CTL_MAXID	12		/* number of valid top-level ids */
 
 #define	CTL_NAMES { \
 	{ 0, 0 }, \
@@ -105,8 +106,15 @@ struct ctlname {
 	{ "user", CTLTYPE_NODE }, \
 	{ "ddb", CTLTYPE_NODE }, \
 	{ "proc", CTLTYPE_NODE }, \
+	{ "vendor", CTLTYPE_NODE }, \
 }
 
+/*
+ * The "vendor" toplevel name is to be used by vendors who wish to
+ * have their own private MIB tree. If you do that, please use
+ * vendor.<yourname>.*
+ */
+
 /*
  * CTL_KERN identifiers
  */