diff --git a/sys/net/if.c b/sys/net/if.c
index 0ac57383c61a..b0c7be766cee 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 1.62 1998/08/12 22:51:59 wpaul Exp $
+ *	$Id: if.c,v 1.63 1998/12/04 22:54:52 archie Exp $
  */
 
 #include "opt_compat.h"
@@ -401,20 +401,54 @@ link_rtrequest(cmd, rt, sa)
  * NOTE: must be called at splnet or eqivalent.
  */
 void
-if_down(ifp)
+if_unroute(ifp, flag, fam)
 	register struct ifnet *ifp;
+	int flag, fam;
 {
 	register struct ifaddr *ifa;
 
-	ifp->if_flags &= ~IFF_UP;
+	ifp->if_flags &= ~flag;
 	getmicrotime(&ifp->if_lastchange);
-	for (ifa = ifp->if_addrhead.tqh_first; ifa; 
-	     ifa = ifa->ifa_link.tqe_next)
-		pfctlinput(PRC_IFDOWN, ifa->ifa_addr);
+	TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
+		if (fam == PF_UNSPEC || (fam == ifa->ifa_addr->sa_family))
+			pfctlinput(PRC_IFDOWN, ifa->ifa_addr);
 	if_qflush(&ifp->if_snd);
 	rt_ifmsg(ifp);
 }
 
+/*
+ * Mark an interface up and notify protocols of
+ * the transition.
+ * NOTE: must be called at splnet or eqivalent.
+ */
+void
+if_route(ifp, flag, fam)
+	register struct ifnet *ifp;
+	int flag, fam;
+{
+	register struct ifaddr *ifa;
+
+	ifp->if_flags |= flag;
+	getmicrotime(&ifp->if_lastchange);
+	TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
+		if (fam == PF_UNSPEC || (fam == ifa->ifa_addr->sa_family))
+			pfctlinput(PRC_IFUP, ifa->ifa_addr);
+	rt_ifmsg(ifp);
+}
+
+/*
+ * Mark an interface down and notify protocols of
+ * the transition.
+ * NOTE: must be called at splnet or eqivalent.
+ */
+void
+if_down(ifp)
+	register struct ifnet *ifp;
+{
+
+	if_unroute(ifp, IFF_UP, AF_UNSPEC);
+}
+
 /*
  * Mark an interface up and notify protocols of
  * the transition.
@@ -424,14 +458,8 @@ void
 if_up(ifp)
 	register struct ifnet *ifp;
 {
-	register struct ifaddr *ifa;
 
-	ifp->if_flags |= IFF_UP;
-	getmicrotime(&ifp->if_lastchange);
-	for (ifa = ifp->if_addrhead.tqh_first; ifa; 
-	     ifa = ifa->ifa_link.tqe_next)
-		pfctlinput(PRC_IFUP, ifa->ifa_addr);
-	rt_ifmsg(ifp);
+	if_route(ifp, IFF_UP, AF_UNSPEC);
 }
 
 /*
diff --git a/sys/net/if_var.h b/sys/net/if_var.h
index 0feaf2322d29..31ce8f63c15d 100644
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	From: @(#)if.h	8.1 (Berkeley) 6/10/93
- *	$Id: if_var.h,v 1.8 1998/06/07 17:12:06 dfr Exp $
+ *	$Id: if_var.h,v 1.9 1998/06/12 03:48:09 julian Exp $
  */
 
 #ifndef	_NET_IF_VAR_H_
@@ -300,10 +300,9 @@ int	if_allmulti __P((struct ifnet *, int));
 void	if_attach __P((struct ifnet *));
 int	if_delmulti __P((struct ifnet *, struct sockaddr *));
 void	if_down __P((struct ifnet *));
+void	if_route __P((struct ifnet *, int flag, int fam));
+void	if_unroute __P((struct ifnet *, int flag, int fam));
 void	if_up __P((struct ifnet *));
-#ifdef vax
-void	ifubareset __P((int));
-#endif
 /*void	ifinit __P((void));*/ /* declared in systm.h for main() */
 int	ifioctl __P((struct socket *, u_long, caddr_t, struct proc *));
 int	ifpromisc __P((struct ifnet *, int));