diff --git a/sys/net/if_arcsubr.c b/sys/net/if_arcsubr.c
index a22e04ed7ac4..3a2033218985 100644
--- a/sys/net/if_arcsubr.c
+++ b/sys/net/if_arcsubr.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: if_arcsubr.c,v 1.1 1995/02/23 07:19:51 glass Exp $	*/
+/*	$NetBSD: if_arcsubr.c,v 1.2 1995/04/11 04:32:09 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1994, 1995 Ignatios Souvatzis
@@ -61,7 +61,6 @@
 #include <netinet/if_arc.h>
 
 u_char	arcbroadcastaddr = 0;
-extern	struct ifnet loif;
 
 #define senderr(e) { error = (e); goto bad;}
 
diff --git a/sys/netccitt/if_x25subr.c b/sys/netccitt/if_x25subr.c
index 763469de4040..09ec91f3906b 100644
--- a/sys/netccitt/if_x25subr.c
+++ b/sys/netccitt/if_x25subr.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: if_x25subr.c,v 1.6 1994/06/29 06:37:19 cgd Exp $	*/
+/*	$NetBSD: if_x25subr.c,v 1.7 1995/04/11 04:30:47 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1990, 1993
@@ -73,7 +73,6 @@ int tp_incoming();
 #include <netiso/iso_var.h>
 #endif
 
-extern	struct ifnet loif;
 struct llinfo_x25 llinfo_x25 = {&llinfo_x25, &llinfo_x25};
 #ifndef _offsetof
 #define _offsetof(t, m) ((int)((caddr_t)&((t *)0)->m))
diff --git a/sys/netinet/if_arp.c b/sys/netinet/if_arp.c
index 8bdc52dc1d96..e5a2b5690836 100644
--- a/sys/netinet/if_arp.c
+++ b/sys/netinet/if_arp.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: if_arp.c,v 1.20 1995/04/07 22:26:04 mycroft Exp $	*/
+/*	$NetBSD: if_arp.c,v 1.21 1995/04/11 04:30:52 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1982, 1986, 1988, 1993
@@ -224,7 +224,6 @@ arp_rtrequest(req, rt, sa)
 				LLADDR(SDL(gate)), SDL(gate)->sdl_alen = 6);
 			if (useloopback)
 				rt->rt_ifp = &loif;
-
 		}
 		break;
 
diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c
index 6bfd18b3d162..388a934e3389 100644
--- a/sys/netinet/if_ether.c
+++ b/sys/netinet/if_ether.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: if_ether.c,v 1.20 1995/04/07 22:26:04 mycroft Exp $	*/
+/*	$NetBSD: if_ether.c,v 1.21 1995/04/11 04:30:52 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1982, 1986, 1988, 1993
@@ -224,7 +224,6 @@ arp_rtrequest(req, rt, sa)
 				LLADDR(SDL(gate)), SDL(gate)->sdl_alen = 6);
 			if (useloopback)
 				rt->rt_ifp = &loif;
-
 		}
 		break;
 
diff --git a/sys/netinet/in.c b/sys/netinet/in.c
index e4c0db6a7580..2a0e26bbb3cc 100644
--- a/sys/netinet/in.c
+++ b/sys/netinet/in.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: in.c,v 1.16 1995/04/10 00:06:57 mycroft Exp $	*/
+/*	$NetBSD: in.c,v 1.17 1995/04/11 04:30:55 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1982, 1986, 1991, 1993
@@ -155,7 +155,6 @@ in_socktrim(ap)
 }
 
 int	in_interfaces;		/* number of external internet interfaces */
-extern	struct ifnet loif;
 
 /*
  * Generic internet control operations (ioctl's).
@@ -238,7 +237,7 @@ in_control(so, cmd, data, ifp)
 				ia->ia_broadaddr.sin_family = AF_INET;
 			}
 			ia->ia_ifp = ifp;
-			if (ifp != &loif)
+			if ((ifp->if_flags & IFF_LOOPBACK) == 0)
 				in_interfaces++;
 		}
 		break;
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 587201a9b002..61f7afd98c18 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ip_output.c,v 1.19 1994/06/29 06:38:27 cgd Exp $	*/
+/*	$NetBSD: ip_output.c,v 1.20 1995/04/11 04:30:56 mycroft Exp $	*/
 
 /*
  * Copyright (c) 1982, 1986, 1988, 1990, 1993
@@ -159,7 +159,6 @@ ip_output(m0, opt, ro, flags, imo)
 	}
 	if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
 		struct in_multi *inm;
-		extern struct ifnet loif;
 
 		m->m_flags |= M_MCAST;
 		/*
@@ -240,7 +239,7 @@ ip_output(m0, opt, ro, flags, imo)
 		 * loop back a copy if this host actually belongs to the
 		 * destination group on the loopback interface.
 		 */
-		if (ip->ip_ttl == 0 || ifp == &loif) {
+		if (ip->ip_ttl == 0 || (ifp->if_flags & IFF_LOOPBACK) != 0) {
 			m_freem(m);
 			goto done;
 		}
diff --git a/sys/netiso/iso.c b/sys/netiso/iso.c
index ccb490e44ecd..921e34379458 100644
--- a/sys/netiso/iso.c
+++ b/sys/netiso/iso.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: iso.c,v 1.8 1995/03/08 02:16:11 cgd Exp $	*/
+/*	$NetBSD: iso.c,v 1.9 1995/04/11 04:30:59 mycroft Exp $	*/
 
 /*-
  * Copyright (c) 1991, 1993
@@ -91,7 +91,6 @@ SOFTWARE.
 #ifdef ISO
 
 int	iso_interfaces = 0;		/* number of external interfaces */
-extern	struct ifnet loif;	/* loopback interface */
 int	ether_output();
 void	llc_rtrequest();
 
@@ -478,7 +477,7 @@ iso_control(so, cmd, data, ifp)
 			ia->ia_ifa.ifa_netmask
 					= (struct sockaddr *)&ia->ia_sockmask;
 			ia->ia_ifp = ifp;
-			if (ifp != &loif)
+			if ((ifp->if_flags & IFF_LOOPBACK) == 0)
 				iso_interfaces++;
 		}
 		break;