diff --git a/sys/net/if.c b/sys/net/if.c
index bcebdb2515be..452560057769 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if.c	8.3 (Berkeley) 1/4/94
- * $Id: if.c,v 1.23 1995/12/05 02:01:36 davidg Exp $
+ * $Id: if.c,v 1.24 1995/12/09 20:47:08 phk Exp $
  */
 
 #include <sys/param.h>
@@ -45,6 +45,7 @@
 #include <sys/ioctl.h>
 #include <sys/errno.h>
 #include <sys/syslog.h>
+#include <sys/sysctl.h>
 
 #include <net/if.h>
 #include <net/if_dl.h>
@@ -756,3 +757,5 @@ sprint_d(n, buf, buflen)
 	} while (n != 0);
 	return (cp);
 }
+
+SYSCTL_NODE(_net, PF_LINK, link, CTLFLAG_RW, 0, "Link layers");
diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c
index b349efa46a52..c4e5dbc402c9 100644
--- a/sys/net/if_ethersubr.c
+++ b/sys/net/if_ethersubr.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if_ethersubr.c	8.1 (Berkeley) 6/10/93
- * $Id: if_ethersubr.c,v 1.11 1995/10/29 15:32:03 phk Exp $
+ * $Id: if_ethersubr.c,v 1.12 1995/12/09 20:47:11 phk Exp $
  */
 
 #include <sys/param.h>
@@ -44,6 +44,7 @@
 #include <sys/ioctl.h>
 #include <sys/errno.h>
 #include <sys/syslog.h>
+#include <sys/sysctl.h>
 
 #include <machine/cpu.h>
 
@@ -712,3 +713,5 @@ ether_delmulti(ifr, ac)
 	 */
 	return (ENETRESET);
 }
+
+SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet");
diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c
index d9385477b790..a0ce6cf4bc1e 100644
--- a/sys/netinet/if_ether.c
+++ b/sys/netinet/if_ether.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if_ether.c	8.1 (Berkeley) 6/10/93
- * $Id: if_ether.c,v 1.23 1995/12/14 09:53:37 phk Exp $
+ * $Id: if_ether.c,v 1.24 1995/12/16 00:05:40 bde Exp $
  */
 
 /*
@@ -61,20 +61,19 @@
 #define SIN(s) ((struct sockaddr_in *)s)
 #define SDL(s) ((struct sockaddr_dl *)s)
 
-SYSCTL_NODE(_net, OID_AUTO, arp, CTLFLAG_RW, 0, "");
+SYSCTL_NODE(_net_link_ether, PF_INET, inet, CTLFLAG_RW, 0, "");
 
 /* timer values */
-static int	arpt_prune = (5*60*1);
-	/* walk list every 5 minutes */
-SYSCTL_INT(_net_arp, OID_AUTO, t_prune, CTLFLAG_RW, &arpt_prune, 0, "");
+static int arpt_prune = (5*60*1); /* walk list every 5 minutes */
+static int arpt_keep = (20*60); /* once resolved, good for 20 more minutes */
+static int arpt_down = 20;	/* once declared down, don't send for 20 sec */
 
-static int	arpt_keep = (20*60);
-	/* once resolved, good for 20 more minutes */
-SYSCTL_INT(_net_arp, OID_AUTO, t_keep, CTLFLAG_RW, &arpt_keep, 0, "");
-
-static int	arpt_down = 20;
-	/* once declared down, don't send for 20 secs */
-SYSCTL_INT(_net_arp, OID_AUTO, t_down, CTLFLAG_RW, &arpt_down, 0, "");
+SYSCTL_INT(_net_link_ether_inet, OID_AUTO, prune_intvl, CTLFLAG_RW,
+	   &arpt_prune, 0, "");
+SYSCTL_INT(_net_link_ether_inet, OID_AUTO, max_age, CTLFLAG_RW, 
+	   &arpt_keep, 0, "");
+SYSCTL_INT(_net_link_ether_inet, OID_AUTO, host_down_time, CTLFLAG_RW,
+	   &arpt_down, 0, "");
 
 #define	rt_expire rt_rmx.rmx_expire
 
@@ -92,14 +91,15 @@ struct	ifqueue arpintrq = {0, 0, 0, 50};
 static int	arp_inuse, arp_allocated;
 
 static int	arp_maxtries = 5;
-SYSCTL_INT(_net_arp, OID_AUTO, maxtries, CTLFLAG_RW, &arp_maxtries, 0, "");
-
-static int	useloopback = 1;
-	/* use loopback interface for local traffic */
-SYSCTL_INT(_net_arp, OID_AUTO, useloopback, CTLFLAG_RW, &useloopback, 0, "");
-
+static int	useloopback = 1; /* use loopback interface for local traffic */
 static int	arp_proxyall = 0;
-SYSCTL_INT(_net_arp, OID_AUTO, proxyall, CTLFLAG_RW, &arp_proxyall, 0, "");
+
+SYSCTL_INT(_net_link_ether_inet, OID_AUTO, maxtries, CTLFLAG_RW,
+	   &arp_maxtries, 0, "");
+SYSCTL_INT(_net_link_ether_inet, OID_AUTO, useloopback, CTLFLAG_RW,
+	   &useloopback, 0, "");
+SYSCTL_INT(_net_link_ether_inet, OID_AUTO, proxyall, CTLFLAG_RW,
+	   &arp_proxyall, 0, "");
 
 static void	arp_rtrequest __P((int, struct rtentry *, struct sockaddr *));
 static void	arprequest __P((struct arpcom *, u_long *, u_long *, u_char *));
diff --git a/sys/netinet/in_proto.c b/sys/netinet/in_proto.c
index 802b580b15cf..8826fa754d0b 100644
--- a/sys/netinet/in_proto.c
+++ b/sys/netinet/in_proto.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)in_proto.c	8.2 (Berkeley) 2/9/95
- *	$Id: in_proto.c,v 1.22 1995/11/20 12:28:16 phk Exp $
+ *	$Id: in_proto.c,v 1.23 1995/12/02 19:37:53 bde Exp $
  */
 
 #include <sys/param.h>
@@ -182,13 +182,14 @@ struct domain inetdomain =
 
 DOMAIN_SET(inet);
 
-SYSCTL_NODE(_net,PF_INET,	   inet,CTLFLAG_RW,0,	"InterNet Protocols");
+SYSCTL_NODE(_net,      PF_INET,		inet,	CTLFLAG_RW, 0,
+	"Internet Family");
 
-SYSCTL_NODE(_net_inet,IPPROTO_IP,  ip,	CTLFLAG_RW,0,	"IP");
-SYSCTL_NODE(_net_inet,IPPROTO_ICMP,icmp,CTLFLAG_RW,0,	"ICMP");
-SYSCTL_NODE(_net_inet,IPPROTO_UDP, udp,	CTLFLAG_RW,0,	"UDP");
-SYSCTL_NODE(_net_inet,IPPROTO_TCP, tcp,	CTLFLAG_RW,0,	"TCP");
-SYSCTL_NODE(_net_inet,IPPROTO_IGMP,igmp,CTLFLAG_RW,0,	"IGMP");
+SYSCTL_NODE(_net_inet, IPPROTO_IP,	ip,	CTLFLAG_RW, 0,	"IP");
+SYSCTL_NODE(_net_inet, IPPROTO_ICMP,	icmp,	CTLFLAG_RW, 0,	"ICMP");
+SYSCTL_NODE(_net_inet, IPPROTO_UDP,	udp,	CTLFLAG_RW, 0,	"UDP");
+SYSCTL_NODE(_net_inet, IPPROTO_TCP,	tcp,	CTLFLAG_RW, 0,	"TCP");
+SYSCTL_NODE(_net_inet, IPPROTO_IGMP,	igmp,	CTLFLAG_RW, 0,	"IGMP");
 
 #include "imp.h"
 #if NIMP > 0