diff --git a/sys/conf/options b/sys/conf/options
index af62a9aa46b9..b6efd2366d07 100644
--- a/sys/conf/options
+++ b/sys/conf/options
@@ -1,4 +1,4 @@
-#	$Id: options,v 1.41 1997/12/16 17:39:55 eivind Exp $
+#	$Id: options,v 1.42 1997/12/16 23:59:37 eivind Exp $
 
 # Format:
 # Option name	filename
@@ -101,6 +101,7 @@ OPEN_MAX		opt_defunct.h
 ARP_PROXYALL		opt_defunct.h
 GATEWAY			opt_defunct.h
 MROUTING		opt_mrouting.h
+INET			opt_inet.h
 IPDIVERT
 IPFIREWALL		opt_ipfw.h
 IPFIREWALL_VERBOSE	opt_ipfw.h
diff --git a/sys/dev/ar/if_ar.c b/sys/dev/ar/if_ar.c
index 88619b84fe15..d4d64e537101 100644
--- a/sys/dev/ar/if_ar.c
+++ b/sys/dev/ar/if_ar.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: if_ar.c,v 1.15 1997/05/19 22:02:47 joerg Exp $
+ * $Id: if_ar.c,v 1.16 1997/09/02 01:18:04 bde Exp $
  */
 
 /*
@@ -73,6 +73,12 @@
 
 #include "ioconf.h"
 
+#include "sppp.h"
+#if NSPPP <= 0
+#error device 'ar' require sppp.
+#endif
+
+
 #ifdef TRACE
 #define TRC(x)               x
 #else
diff --git a/sys/dev/ar/if_ar_isa.c b/sys/dev/ar/if_ar_isa.c
index 88619b84fe15..d4d64e537101 100644
--- a/sys/dev/ar/if_ar_isa.c
+++ b/sys/dev/ar/if_ar_isa.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: if_ar.c,v 1.15 1997/05/19 22:02:47 joerg Exp $
+ * $Id: if_ar.c,v 1.16 1997/09/02 01:18:04 bde Exp $
  */
 
 /*
@@ -73,6 +73,12 @@
 
 #include "ioconf.h"
 
+#include "sppp.h"
+#if NSPPP <= 0
+#error device 'ar' require sppp.
+#endif
+
+
 #ifdef TRACE
 #define TRC(x)               x
 #else
diff --git a/sys/dev/de/if_de.c b/sys/dev/de/if_de.c
index f94d42fa6821..a822ea4946c2 100644
--- a/sys/dev/de/if_de.c
+++ b/sys/dev/de/if_de.c
@@ -1,5 +1,5 @@
 /*	$NetBSD: if_de.c,v 1.56 1997/10/20 14:32:46 matt Exp $	*/
-/*	$Id: if_de.c,v 1.75 1997/11/22 06:45:57 bde Exp $ */
+/*	$Id: if_de.c,v 1.76 1997/12/15 20:31:25 eivind Exp $ */
 
 /*-
  * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
@@ -39,6 +39,7 @@
  */
 #define	TULIP_HDR_DATA
 
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -82,6 +83,7 @@
 
 #ifdef INET
 #include <netinet/in.h>
+#include <netinet/if_ether.h>
 #endif
 
 #ifdef IPX
@@ -99,7 +101,8 @@
 #if defined(__FreeBSD__)
 #include <vm/pmap.h>
 #include <pci.h>
-#include <netinet/if_ether.h>
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 #if NPCI > 0
 #include <pci/pcivar.h>
 #include <pci/dc21040reg.h>
diff --git a/sys/dev/ed/if_ed.c b/sys/dev/ed/if_ed.c
index 89a577f04610..3f72f969226f 100644
--- a/sys/dev/ed/if_ed.c
+++ b/sys/dev/ed/if_ed.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ed.c,v 1.128 1997/11/07 08:52:33 phk Exp $
+ *	$Id: if_ed.c,v 1.129 1997/11/20 15:48:27 nate Exp $
  */
 
 /*
@@ -39,6 +39,7 @@
 
 #include "ed.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -49,13 +50,14 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_dl.h>
 #include <net/if_mib.h>
 
 #ifdef INET
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
 #endif
 
 #ifdef NS
diff --git a/sys/dev/en/midway.c b/sys/dev/en/midway.c
index b1bb5ab7b1e3..6c9ac73caf74 100644
--- a/sys/dev/en/midway.c
+++ b/sys/dev/en/midway.c
@@ -89,6 +89,7 @@
 
 #ifdef __FreeBSD__
 #include "en.h"
+#include "opt_inet.h"
 #endif
 
 #if NEN > 0 || !defined(__FreeBSD__)
diff --git a/sys/dev/ep/if_ep.c b/sys/dev/ep/if_ep.c
index 5c55256a0cfa..b4945e0375fa 100644
--- a/sys/dev/ep/if_ep.c
+++ b/sys/dev/ep/if_ep.c
@@ -38,7 +38,7 @@
  */
 
 /*
- *  $Id: if_ep.c,v 1.68 1997/11/27 12:59:46 kato Exp $
+ *  $Id: if_ep.c,v 1.69 1997/12/15 20:30:43 eivind Exp $
  *
  *  Promiscuous mode added and interrupt logic slightly changed
  *  to reduce the number of adapter failures. Transceiver select
@@ -60,6 +60,7 @@
 #if NEP > 0
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -78,6 +79,11 @@
 
 #include <net/if.h>
 
+#if defined(__FreeBSD__)
+#include <net/ethernet.h>
+#include <net/if_arp.h>
+#endif
+
 #ifdef INET
 #include <netinet/in.h>
 #include <netinet/if_ether.h>
diff --git a/sys/dev/ex/if_ex.c b/sys/dev/ex/if_ex.c
index 78500eb518bb..566d884a99e6 100644
--- a/sys/dev/ex/if_ex.c
+++ b/sys/dev/ex/if_ex.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ex.c,v 1.8 1997/11/07 08:52:38 phk Exp $
+ *	$Id: if_ex.c,v 1.9 1997/12/15 20:30:45 eivind Exp $
  */
 
 /*
@@ -38,6 +38,7 @@
 #include "ex.h"
 #if NEX > 0
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -47,7 +48,9 @@
 #include <sys/mbuf.h>
 #include <sys/socket.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
diff --git a/sys/dev/fe/if_fe.c b/sys/dev/fe/if_fe.c
index 115b85e54db1..32adfd27d5d4 100644
--- a/sys/dev/fe/if_fe.c
+++ b/sys/dev/fe/if_fe.c
@@ -21,7 +21,7 @@
  */
 
 /*
- * $Id: if_fe.c,v 1.35 1997/11/20 15:48:35 nate Exp $
+ * $Id: if_fe.c,v 1.36 1997/12/15 20:30:47 eivind Exp $
  *
  * Device driver for Fujitsu MB86960A/MB86965A based Ethernet cards.
  * To be used with FreeBSD 2.x
@@ -72,6 +72,7 @@
 
 #include "fe.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -85,7 +86,9 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_dl.h>
 
 #ifdef INET
diff --git a/sys/dev/fxp/if_fxp.c b/sys/dev/fxp/if_fxp.c
index ef3284f78c9b..ef0a28000c74 100644
--- a/sys/dev/fxp/if_fxp.c
+++ b/sys/dev/fxp/if_fxp.c
@@ -27,7 +27,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_fxp.c,v 1.45 1997/10/23 01:45:15 davidg Exp $
+ *	$Id: if_fxp.c,v 1.46 1997/10/28 15:59:21 bde Exp $
  */
 
 /*
@@ -35,6 +35,7 @@
  */
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -49,6 +50,7 @@
 
 #ifdef INET
 #include <netinet/in.h>
+#include <netinet/if_ether.h>
 #endif
 
 #ifdef NS
@@ -94,7 +96,8 @@
 
 #include <sys/sockio.h>
 
-#include <netinet/if_ether.h>
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 
 #include <vm/vm.h>		/* for vtophys */
 #include <vm/pmap.h>		/* for vtophys */
diff --git a/sys/dev/ie/if_ie.c b/sys/dev/ie/if_ie.c
index daab501fe6ea..5e2f30c56b00 100644
--- a/sys/dev/ie/if_ie.c
+++ b/sys/dev/ie/if_ie.c
@@ -47,7 +47,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ie.c,v 1.47 1997/10/15 10:09:24 joerg Exp $
+ *	$Id: if_ie.c,v 1.48 1997/12/15 20:30:49 eivind Exp $
  */
 
 /*
@@ -108,6 +108,7 @@ iomem and and with 0xffff.
 
 #include "ie.h"
 #if NIE > 0
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -120,7 +121,9 @@ iomem and and with 0xffff.
 #include <sys/sockio.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_types.h>
 #include <net/if_dl.h>
 
diff --git a/sys/dev/lnc/if_lnc.c b/sys/dev/lnc/if_lnc.c
index 24df45392c87..71d9934a3bbf 100644
--- a/sys/dev/lnc/if_lnc.c
+++ b/sys/dev/lnc/if_lnc.c
@@ -65,6 +65,7 @@
 #if NLNC > 0
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 /* Some defines that should really be in generic locations */
 #define FCS_LEN 4
@@ -79,7 +80,9 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_types.h>
 #ifdef INET
 #include <netinet/in.h>
@@ -96,7 +99,7 @@
 #include <i386/isa/if_lnc.h>
 
 struct lnc_softc {
-	struct arpcom arpcom;	            /* see ../../netinet/if_ether.h */
+	struct arpcom arpcom;	            /* see ../../net/if_arp.h */
 	struct nic_info nic;	            /* NIC specific info */
 	int nrdre;
 	struct host_ring_entry *recv_ring;  /* start of alloc'd mem */
diff --git a/sys/dev/pdq/if_fea.c b/sys/dev/pdq/if_fea.c
index e993a2ad2ada..2cf06a04e2f6 100644
--- a/sys/dev/pdq/if_fea.c
+++ b/sys/dev/pdq/if_fea.c
@@ -21,7 +21,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: if_fea.c,v 1.6 1997/09/14 11:28:30 peter Exp $
+ * $Id: if_fea.c,v 1.7 1997/09/21 21:35:24 gibbs Exp $
  */
 
 /*
@@ -30,6 +30,7 @@
  *	This module support the DEFEA EISA FDDI Controller.
  */
 
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -38,11 +39,12 @@
 #include <sys/device.h>
 #endif
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
 #endif
 
 #if defined(__FreeBSD__)
diff --git a/sys/dev/pdq/if_fpa.c b/sys/dev/pdq/if_fpa.c
index 0dab3560d715..b0b38f063207 100644
--- a/sys/dev/pdq/if_fpa.c
+++ b/sys/dev/pdq/if_fpa.c
@@ -21,7 +21,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: if_fpa.c,v 1.3 1997/03/24 11:24:51 bde Exp $
+ * $Id: if_fpa.c,v 1.4 1997/08/02 14:33:10 bde Exp $
  *
  */
 
@@ -31,6 +31,7 @@
  *   This module supports the DEC DEFPA PCI FDDI Controller
  */
 
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -48,6 +49,8 @@
 
 #if defined(__FreeBSD__)
 #include "fpa.h"
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 #include <pci/pcivar.h>
 #include <dev/pdq/pdqvar.h>
 #include <dev/pdq/pdqreg.h>
diff --git a/sys/dev/pdq/pdq_ifsubr.c b/sys/dev/pdq/pdq_ifsubr.c
index 33a6b7af1e89..9c13a005a6a8 100644
--- a/sys/dev/pdq/pdq_ifsubr.c
+++ b/sys/dev/pdq/pdq_ifsubr.c
@@ -21,7 +21,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: pdq_ifsubr.c,v 1.4 1997/03/24 11:32:26 bde Exp $
+ * $Id: pdq_ifsubr.c,v 1.5 1997/06/14 13:56:07 bde Exp $
  *
  */
 
@@ -33,6 +33,8 @@
  */
 
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/socket.h>
 #include <sys/sockio.h>
@@ -48,11 +50,13 @@
 #include <net/bpf.h>
 #endif
 
+#if defined(__FreeBSD__)
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 #ifdef INET
 #include <netinet/in.h>
 #include <netinet/if_ether.h>
 #endif
-#if defined(__FreeBSD__)
 #include <netinet/if_fddi.h>
 #else
 #include <net/if_fddi.h>
diff --git a/sys/dev/sr/if_sr.c b/sys/dev/sr/if_sr.c
index 604632f4651e..c27467a3a4e8 100644
--- a/sys/dev/sr/if_sr.c
+++ b/sys/dev/sr/if_sr.c
@@ -27,7 +27,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: if_sr.c,v 1.8 1997/07/20 14:10:01 bde Exp $
+ * $Id: if_sr.c,v 1.9 1997/09/02 01:18:16 bde Exp $
  */
 
 /*
@@ -55,6 +55,11 @@
 #endif
 #include "bpfilter.h"
 
+#include "sppp.h"
+#if NSPPP <= 0
+#error Device 'sr' requires sppp.
+#endif
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
diff --git a/sys/dev/sr/if_sr_isa.c b/sys/dev/sr/if_sr_isa.c
index 604632f4651e..c27467a3a4e8 100644
--- a/sys/dev/sr/if_sr_isa.c
+++ b/sys/dev/sr/if_sr_isa.c
@@ -27,7 +27,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: if_sr.c,v 1.8 1997/07/20 14:10:01 bde Exp $
+ * $Id: if_sr.c,v 1.9 1997/09/02 01:18:16 bde Exp $
  */
 
 /*
@@ -55,6 +55,11 @@
 #endif
 #include "bpfilter.h"
 
+#include "sppp.h"
+#if NSPPP <= 0
+#error Device 'sr' requires sppp.
+#endif
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
diff --git a/sys/dev/vx/if_vx.c b/sys/dev/vx/if_vx.c
index 420e6c10ef2a..47367ac7051e 100644
--- a/sys/dev/vx/if_vx.c
+++ b/sys/dev/vx/if_vx.c
@@ -61,6 +61,7 @@
 #endif
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -71,10 +72,8 @@
 
 #include <net/if.h>
 
-#ifdef INET
-#include <netinet/in.h>
-#include <netinet/if_ether.h>
-#endif
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 
 #ifdef NS
 #include <netns/ns.h>
diff --git a/sys/dev/vx/if_vx_eisa.c b/sys/dev/vx/if_vx_eisa.c
index 924cf81f5d82..8002b16432ce 100644
--- a/sys/dev/vx/if_vx_eisa.c
+++ b/sys/dev/vx/if_vx_eisa.c
@@ -34,16 +34,19 @@
 #include "vx.h"
 #if NVX > 0
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/socket.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
 #endif
 
 #ifdef NS
diff --git a/sys/dev/vx/if_vx_pci.c b/sys/dev/vx/if_vx_pci.c
index b667b89bb4d9..bce0de98f560 100644
--- a/sys/dev/vx/if_vx_pci.c
+++ b/sys/dev/vx/if_vx_pci.c
@@ -33,19 +33,23 @@
 
 #include "vx.h"
 #if NVX > 0
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/socket.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
 #include <netinet/if_ether.h>
 #endif
 
+
 #ifdef NS
 #include <netns/ns.h>
 #include <netns/ns_if.h>
diff --git a/sys/dev/wl/if_wl.c b/sys/dev/wl/if_wl.c
index 2073ef977de8..7ed1d4ced722 100644
--- a/sys/dev/wl/if_wl.c
+++ b/sys/dev/wl/if_wl.c
@@ -1,4 +1,4 @@
-/* $Id: if_wl.c,v 1.8 1997/08/25 22:34:25 bde Exp $ */
+/* $Id: if_wl.c,v 1.9 1997/09/21 21:41:13 gibbs Exp $ */
 /* 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -191,6 +191,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include "wl.h"
 #include "opt_wavelan.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -203,7 +204,9 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <sys/kernel.h>
 #include <sys/sysctl.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_dl.h>
 
 #ifdef INET
@@ -2581,6 +2584,7 @@ void wl_cache_store (int unit, int base, struct ether_header *eh,
 	 * keep multicast only.
 	 */
  
+#ifdef INET
 	/* reject if not IP packet
 	*/
 	if ( wl_cache_iponly && (ntohs(eh->ether_type) != 0x800)) {
@@ -2676,6 +2680,7 @@ void wl_cache_store (int unit, int base, struct ether_header *eh,
 			signal - silence;
 	else
 		sc->w_sigcache[w_insertcache].snr = 0;
+#endif /* INET */
 
 }
 #endif /* WLCACHE */
diff --git a/sys/i386/eisa/if_fea.c b/sys/i386/eisa/if_fea.c
index e993a2ad2ada..2cf06a04e2f6 100644
--- a/sys/i386/eisa/if_fea.c
+++ b/sys/i386/eisa/if_fea.c
@@ -21,7 +21,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: if_fea.c,v 1.6 1997/09/14 11:28:30 peter Exp $
+ * $Id: if_fea.c,v 1.7 1997/09/21 21:35:24 gibbs Exp $
  */
 
 /*
@@ -30,6 +30,7 @@
  *	This module support the DEFEA EISA FDDI Controller.
  */
 
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -38,11 +39,12 @@
 #include <sys/device.h>
 #endif
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
 #endif
 
 #if defined(__FreeBSD__)
diff --git a/sys/i386/eisa/if_vx_eisa.c b/sys/i386/eisa/if_vx_eisa.c
index 924cf81f5d82..8002b16432ce 100644
--- a/sys/i386/eisa/if_vx_eisa.c
+++ b/sys/i386/eisa/if_vx_eisa.c
@@ -34,16 +34,19 @@
 #include "vx.h"
 #if NVX > 0
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/socket.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
 #endif
 
 #ifdef NS
diff --git a/sys/i386/isa/if_ar.c b/sys/i386/isa/if_ar.c
index 88619b84fe15..d4d64e537101 100644
--- a/sys/i386/isa/if_ar.c
+++ b/sys/i386/isa/if_ar.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: if_ar.c,v 1.15 1997/05/19 22:02:47 joerg Exp $
+ * $Id: if_ar.c,v 1.16 1997/09/02 01:18:04 bde Exp $
  */
 
 /*
@@ -73,6 +73,12 @@
 
 #include "ioconf.h"
 
+#include "sppp.h"
+#if NSPPP <= 0
+#error device 'ar' require sppp.
+#endif
+
+
 #ifdef TRACE
 #define TRC(x)               x
 #else
diff --git a/sys/i386/isa/if_cx.c b/sys/i386/isa/if_cx.c
index 0c2b3a362513..569209da619f 100644
--- a/sys/i386/isa/if_cx.c
+++ b/sys/i386/isa/if_cx.c
@@ -21,6 +21,11 @@
 #include "cx.h"
 #include "bpfilter.h"
 
+#include "sppp.h"
+#if NSPPP <= 0
+#error The device 'cx' requires sppp.
+#endif
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
diff --git a/sys/i386/isa/if_ed.c b/sys/i386/isa/if_ed.c
index 89a577f04610..3f72f969226f 100644
--- a/sys/i386/isa/if_ed.c
+++ b/sys/i386/isa/if_ed.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ed.c,v 1.128 1997/11/07 08:52:33 phk Exp $
+ *	$Id: if_ed.c,v 1.129 1997/11/20 15:48:27 nate Exp $
  */
 
 /*
@@ -39,6 +39,7 @@
 
 #include "ed.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -49,13 +50,14 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_dl.h>
 #include <net/if_mib.h>
 
 #ifdef INET
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
 #endif
 
 #ifdef NS
diff --git a/sys/i386/isa/if_eg.c b/sys/i386/isa/if_eg.c
index ae6966d806d5..afe35c2e0b63 100644
--- a/sys/i386/isa/if_eg.c
+++ b/sys/i386/isa/if_eg.c
@@ -27,7 +27,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: if_eg.c,v 1.24 1997/07/20 14:09:57 bde Exp $
+ * $Id: if_eg.c,v 1.25 1997/09/02 01:18:09 bde Exp $
  *
  * Support for 3Com 3c505 Etherlink+ card.
  */
@@ -38,6 +38,7 @@
  */
 #include "eg.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -48,11 +49,12 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
 #endif
 
 #ifdef NS
diff --git a/sys/i386/isa/if_el.c b/sys/i386/isa/if_el.c
index 9fb5a17fad06..7eeabd7aee4c 100644
--- a/sys/i386/isa/if_el.c
+++ b/sys/i386/isa/if_el.c
@@ -6,7 +6,7 @@
  *
  * Questions, comments, bug reports and fixes to kimmel@cs.umass.edu.
  *
- * $Id: if_el.c,v 1.31 1997/07/20 14:09:57 bde Exp $
+ * $Id: if_el.c,v 1.32 1997/12/15 20:30:40 eivind Exp $
  */
 /* Except of course for the portions of code lifted from other FreeBSD
  * drivers (mainly elread, elget and el_ioctl)
@@ -21,6 +21,7 @@
  */
 #include "el.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -31,7 +32,9 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
diff --git a/sys/i386/isa/if_ep.c b/sys/i386/isa/if_ep.c
index 5c55256a0cfa..b4945e0375fa 100644
--- a/sys/i386/isa/if_ep.c
+++ b/sys/i386/isa/if_ep.c
@@ -38,7 +38,7 @@
  */
 
 /*
- *  $Id: if_ep.c,v 1.68 1997/11/27 12:59:46 kato Exp $
+ *  $Id: if_ep.c,v 1.69 1997/12/15 20:30:43 eivind Exp $
  *
  *  Promiscuous mode added and interrupt logic slightly changed
  *  to reduce the number of adapter failures. Transceiver select
@@ -60,6 +60,7 @@
 #if NEP > 0
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -78,6 +79,11 @@
 
 #include <net/if.h>
 
+#if defined(__FreeBSD__)
+#include <net/ethernet.h>
+#include <net/if_arp.h>
+#endif
+
 #ifdef INET
 #include <netinet/in.h>
 #include <netinet/if_ether.h>
diff --git a/sys/i386/isa/if_ex.c b/sys/i386/isa/if_ex.c
index 78500eb518bb..566d884a99e6 100644
--- a/sys/i386/isa/if_ex.c
+++ b/sys/i386/isa/if_ex.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ex.c,v 1.8 1997/11/07 08:52:38 phk Exp $
+ *	$Id: if_ex.c,v 1.9 1997/12/15 20:30:45 eivind Exp $
  */
 
 /*
@@ -38,6 +38,7 @@
 #include "ex.h"
 #if NEX > 0
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -47,7 +48,9 @@
 #include <sys/mbuf.h>
 #include <sys/socket.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
diff --git a/sys/i386/isa/if_fe.c b/sys/i386/isa/if_fe.c
index 115b85e54db1..32adfd27d5d4 100644
--- a/sys/i386/isa/if_fe.c
+++ b/sys/i386/isa/if_fe.c
@@ -21,7 +21,7 @@
  */
 
 /*
- * $Id: if_fe.c,v 1.35 1997/11/20 15:48:35 nate Exp $
+ * $Id: if_fe.c,v 1.36 1997/12/15 20:30:47 eivind Exp $
  *
  * Device driver for Fujitsu MB86960A/MB86965A based Ethernet cards.
  * To be used with FreeBSD 2.x
@@ -72,6 +72,7 @@
 
 #include "fe.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -85,7 +86,9 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_dl.h>
 
 #ifdef INET
diff --git a/sys/i386/isa/if_ie.c b/sys/i386/isa/if_ie.c
index daab501fe6ea..5e2f30c56b00 100644
--- a/sys/i386/isa/if_ie.c
+++ b/sys/i386/isa/if_ie.c
@@ -47,7 +47,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ie.c,v 1.47 1997/10/15 10:09:24 joerg Exp $
+ *	$Id: if_ie.c,v 1.48 1997/12/15 20:30:49 eivind Exp $
  */
 
 /*
@@ -108,6 +108,7 @@ iomem and and with 0xffff.
 
 #include "ie.h"
 #if NIE > 0
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -120,7 +121,9 @@ iomem and and with 0xffff.
 #include <sys/sockio.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_types.h>
 #include <net/if_dl.h>
 
diff --git a/sys/i386/isa/if_le.c b/sys/i386/isa/if_le.c
index 4bbfc7e81a27..e8ca9304029f 100644
--- a/sys/i386/isa/if_le.c
+++ b/sys/i386/isa/if_le.c
@@ -21,7 +21,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: if_le.c,v 1.41 1997/08/25 22:28:57 bde Exp $
+ * $Id: if_le.c,v 1.42 1997/12/15 20:30:51 eivind Exp $
  */
 
 /*
@@ -37,6 +37,7 @@
 
 #include "le.h"
 #if NLE > 0
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -47,7 +48,9 @@
 #include <sys/sockio.h>
 #include <sys/malloc.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_types.h>
 #include <net/if_dl.h>
 
diff --git a/sys/i386/isa/if_lnc.c b/sys/i386/isa/if_lnc.c
index 24df45392c87..71d9934a3bbf 100644
--- a/sys/i386/isa/if_lnc.c
+++ b/sys/i386/isa/if_lnc.c
@@ -65,6 +65,7 @@
 #if NLNC > 0
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 /* Some defines that should really be in generic locations */
 #define FCS_LEN 4
@@ -79,7 +80,9 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_types.h>
 #ifdef INET
 #include <netinet/in.h>
@@ -96,7 +99,7 @@
 #include <i386/isa/if_lnc.h>
 
 struct lnc_softc {
-	struct arpcom arpcom;	            /* see ../../netinet/if_ether.h */
+	struct arpcom arpcom;	            /* see ../../net/if_arp.h */
 	struct nic_info nic;	            /* NIC specific info */
 	int nrdre;
 	struct host_ring_entry *recv_ring;  /* start of alloc'd mem */
diff --git a/sys/i386/isa/if_sr.c b/sys/i386/isa/if_sr.c
index 604632f4651e..c27467a3a4e8 100644
--- a/sys/i386/isa/if_sr.c
+++ b/sys/i386/isa/if_sr.c
@@ -27,7 +27,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: if_sr.c,v 1.8 1997/07/20 14:10:01 bde Exp $
+ * $Id: if_sr.c,v 1.9 1997/09/02 01:18:16 bde Exp $
  */
 
 /*
@@ -55,6 +55,11 @@
 #endif
 #include "bpfilter.h"
 
+#include "sppp.h"
+#if NSPPP <= 0
+#error Device 'sr' requires sppp.
+#endif
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
diff --git a/sys/i386/isa/if_wl.c b/sys/i386/isa/if_wl.c
index 2073ef977de8..7ed1d4ced722 100644
--- a/sys/i386/isa/if_wl.c
+++ b/sys/i386/isa/if_wl.c
@@ -1,4 +1,4 @@
-/* $Id: if_wl.c,v 1.8 1997/08/25 22:34:25 bde Exp $ */
+/* $Id: if_wl.c,v 1.9 1997/09/21 21:41:13 gibbs Exp $ */
 /* 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -191,6 +191,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include "wl.h"
 #include "opt_wavelan.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -203,7 +204,9 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <sys/kernel.h>
 #include <sys/sysctl.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 #include <net/if_dl.h>
 
 #ifdef INET
@@ -2581,6 +2584,7 @@ void wl_cache_store (int unit, int base, struct ether_header *eh,
 	 * keep multicast only.
 	 */
  
+#ifdef INET
 	/* reject if not IP packet
 	*/
 	if ( wl_cache_iponly && (ntohs(eh->ether_type) != 0x800)) {
@@ -2676,6 +2680,7 @@ void wl_cache_store (int unit, int base, struct ether_header *eh,
 			signal - silence;
 	else
 		sc->w_sigcache[w_insertcache].snr = 0;
+#endif /* INET */
 
 }
 #endif /* WLCACHE */
diff --git a/sys/i386/isa/if_ze.c b/sys/i386/isa/if_ze.c
index 961dfebc3cee..41d32778e6db 100644
--- a/sys/i386/isa/if_ze.c
+++ b/sys/i386/isa/if_ze.c
@@ -47,7 +47,7 @@
  */
 
 /*
- * $Id: if_ze.c,v 1.46 1997/10/26 04:36:14 nate Exp $
+ * $Id: if_ze.c,v 1.47 1997/12/15 20:30:54 eivind Exp $
  */
 
 /* XXX - Don't mix different PCCARD support code */
@@ -64,6 +64,7 @@
 #include "ze.h"
 #if	NZE > 0
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -74,7 +75,9 @@
 #include <sys/socket.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
diff --git a/sys/i386/isa/if_zp.c b/sys/i386/isa/if_zp.c
index b9e2933d6285..5c155b1565c9 100644
--- a/sys/i386/isa/if_zp.c
+++ b/sys/i386/isa/if_zp.c
@@ -34,7 +34,7 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  *	From: if_ep.c,v 1.9 1994/01/25 10:46:29 deraadt Exp $
- *	$Id: if_zp.c,v 1.41 1997/11/07 09:20:28 phk Exp $
+ *	$Id: if_zp.c,v 1.42 1997/12/15 20:30:56 eivind Exp $
  */
 /*-
  * TODO:
@@ -114,6 +114,7 @@
 #include "zp.h"
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -126,7 +127,9 @@
 #include <sys/sockio.h>
 #include <sys/syslog.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
diff --git a/sys/i386/isa/lpt.c b/sys/i386/isa/lpt.c
index 735cc3e63fc2..399c69c15611 100644
--- a/sys/i386/isa/lpt.c
+++ b/sys/i386/isa/lpt.c
@@ -46,7 +46,7 @@
  * SUCH DAMAGE.
  *
  *	from: unknown origin, 386BSD 0.1
- *	$Id: lpt.c,v 1.62 1997/09/02 01:18:18 bde Exp $
+ *	$Id: lpt.c,v 1.63 1997/12/02 21:06:24 phk Exp $
  */
 
 /*
@@ -102,6 +102,7 @@
  */
 
 #include "lpt.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
diff --git a/sys/net/if_arp.h b/sys/net/if_arp.h
index dd726bf85611..cbf6cac44842 100644
--- a/sys/net/if_arp.h
+++ b/sys/net/if_arp.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if_arp.h	8.1 (Berkeley) 6/10/93
- * $Id$
+ * $Id: if_arp.h,v 1.8 1997/02/22 09:40:59 peter Exp $
  */
 
 #ifndef _NET_IF_ARP_H_
@@ -88,4 +88,22 @@ struct arpreq {
 #define	ATF_PUBL	0x08	/* publish entry (respond for other host) */
 #define	ATF_USETRAILERS	0x10	/* has requested trailers */
 
+/*
+ * Structure shared between the ethernet driver modules and
+ * the address resolution code.  For example, each ec_softc or il_softc
+ * begins with this structure.
+ */
+struct	arpcom {
+	/*
+	 * The ifnet struct _must_ be at the head of this structure.
+	 */
+	struct 	ifnet ac_if;		/* network-visible interface */
+	u_char	ac_enaddr[ETHER_ADDR_LEN];		/* ethernet hardware address */
+	int	ac_multicnt;		/* length of ac_multiaddrs list */
+};
+
+#ifdef KERNEL
+extern u_char	etherbroadcastaddr[ETHER_ADDR_LEN];
+#endif
+
 #endif /* !_NET_IF_ARP_H_ */
diff --git a/sys/net/if_atmsubr.c b/sys/net/if_atmsubr.c
index d97a0865b885..fe56c90f5fdc 100644
--- a/sys/net/if_atmsubr.c
+++ b/sys/net/if_atmsubr.c
@@ -36,6 +36,8 @@
  * if_atmsubr.c
  */
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/mbuf.h>
diff --git a/sys/net/if_disc.c b/sys/net/if_disc.c
index 574bc080d288..483ed7766c03 100644
--- a/sys/net/if_disc.c
+++ b/sys/net/if_disc.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	From: @(#)if_loop.c	8.1 (Berkeley) 6/10/93
- *	$Id: if_disc.c,v 1.17 1997/03/24 11:33:10 bde Exp $
+ *	$Id: if_disc.c,v 1.18 1997/08/02 14:32:36 bde Exp $
  */
 
 /*
@@ -52,6 +52,7 @@
 #include <net/bpf.h>
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #ifdef TINY_DSMTU
 #define	DSMTU	(1024+512)
diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c
index e6fc61771e57..eef535761f2c 100644
--- a/sys/net/if_ethersubr.c
+++ b/sys/net/if_ethersubr.c
@@ -31,9 +31,10 @@
  * SUCH DAMAGE.
  *
  *	@(#)if_ethersubr.c	8.1 (Berkeley) 6/10/93
- * $Id: if_ethersubr.c,v 1.40 1997/12/15 20:30:59 eivind Exp $
+ * $Id: if_ethersubr.c,v 1.41 1997/12/20 00:07:02 bde Exp $
  */
 
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -52,11 +53,14 @@
 #include <net/if_dl.h>
 #include <net/if_types.h>
 
+#include <net/ethernet.h>
+#include <net/if_arp.h>
+
 #ifdef INET
 #include <netinet/in.h>
 #include <netinet/in_var.h>
-#endif
 #include <netinet/if_ether.h>
+#endif
 
 #ifdef IPX
 #include <netipx/ipx.h>
diff --git a/sys/net/if_fddisubr.c b/sys/net/if_fddisubr.c
index a5e3809eae11..dca0ad042b4a 100644
--- a/sys/net/if_fddisubr.c
+++ b/sys/net/if_fddisubr.c
@@ -33,9 +33,10 @@
  * SUCH DAMAGE.
  *
  *	from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
- * $Id: if_fddisubr.c,v 1.22 1997/11/18 13:37:56 bde Exp $
+ * $Id: if_fddisubr.c,v 1.23 1997/12/15 20:31:01 eivind Exp $
  */
 
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -54,8 +55,10 @@
 #ifdef INET
 #include <netinet/in.h>
 #include <netinet/in_var.h>
-#endif
 #include <netinet/if_ether.h>
+#endif
+#include <net/ethernet.h>		/* XXX We probably should be able to drop this */
+#include <net/if_arp.h>
 #if defined(__FreeBSD__)
 #include <netinet/if_fddi.h>
 #else
diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c
index 524b443d2d20..1e203beadaa5 100644
--- a/sys/net/if_loop.c
+++ b/sys/net/if_loop.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if_loop.c	8.1 (Berkeley) 6/10/93
- * $Id: if_loop.c,v 1.27 1997/08/02 14:32:37 bde Exp $
+ * $Id: if_loop.c,v 1.28 1997/12/15 20:31:02 eivind Exp $
  */
 
 /*
@@ -40,6 +40,7 @@
 #include "loop.h"
 #if NLOOP > 0
 
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
diff --git a/sys/net/if_ppp.c b/sys/net/if_ppp.c
index 0af8caac9d13..548480c582dc 100644
--- a/sys/net/if_ppp.c
+++ b/sys/net/if_ppp.c
@@ -69,17 +69,20 @@
  * Paul Mackerras (paulus@cs.anu.edu.au).
  */
 
-/* $Id: if_ppp.c,v 1.51 1997/12/06 13:24:25 bde Exp $ */
+/* $Id: if_ppp.c,v 1.52 1997/12/15 20:31:04 eivind Exp $ */
 /* from if_sl.c,v 1.11 84/10/04 12:54:47 rick Exp */
 /* from NetBSD: if_ppp.c,v 1.15.2.2 1994/07/28 05:17:58 cgd Exp */
 
 #include "ppp.h"
 #if NPPP > 0
 
-#include "opt_ppp.h"
+#include "opt_inet.h"
 #include "opt_ipx.h"
+#include "opt_ppp.h"
 
+#ifdef INET
 #define VJC
+#endif
 #define PPP_COMPRESS
 
 #include <sys/param.h>
diff --git a/sys/net/if_sl.c b/sys/net/if_sl.c
index a2939700009e..695627c9f2e4 100644
--- a/sys/net/if_sl.c
+++ b/sys/net/if_sl.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if_sl.c	8.6 (Berkeley) 2/1/94
- * $Id: if_sl.c,v 1.62 1997/12/06 13:24:31 bde Exp $
+ * $Id: if_sl.c,v 1.64 1997/12/19 19:39:01 ache Exp $
  */
 
 /*
@@ -69,6 +69,7 @@
 #if NSL > 0
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -95,7 +96,7 @@
 #include <netinet/in_var.h>
 #include <netinet/ip.h>
 #else
-Huh? Slip without inet?
+#error "Huh? Slip without inet?"
 #endif
 
 #include <net/slcompress.h>
diff --git a/sys/net/if_spppsubr.c b/sys/net/if_spppsubr.c
index cd266a760680..d5f449f69be9 100644
--- a/sys/net/if_spppsubr.c
+++ b/sys/net/if_spppsubr.c
@@ -17,9 +17,10 @@
  *
  * From: Version 2.4, Thu Apr 30 17:17:21 MSD 1997
  *
- * $Id: if_spppsubr.c,v 1.29 1997/12/15 20:31:08 eivind Exp $
+ * $Id: if_spppsubr.c,v 1.30 1998/01/01 21:27:18 gj Exp $
  */
 
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -45,6 +46,8 @@
 #include <netinet/ip.h>
 #include <netinet/tcp.h>
 #include <netinet/if_ether.h>
+#else
+#error Huh? sppp without INET?
 #endif
 
 #ifdef IPX
diff --git a/sys/net/if_tun.c b/sys/net/if_tun.c
index c263d84f86b3..6d9318e1c3d4 100644
--- a/sys/net/if_tun.c
+++ b/sys/net/if_tun.c
@@ -17,6 +17,8 @@
 #include "tun.h"
 #if NTUN > 0
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/proc.h>
 #include <sys/systm.h>
@@ -233,7 +235,8 @@ tuninit(unit)
 	microtime(&ifp->if_lastchange);
 
 	for (ifa = ifp->if_addrhead.tqh_first; ifa; 
-	     ifa = ifa->ifa_link.tqe_next)
+	     ifa = ifa->ifa_link.tqe_next) {
+#ifdef INET
 		if (ifa->ifa_addr->sa_family == AF_INET) {
 		    struct sockaddr_in *si;
 
@@ -245,7 +248,8 @@ tuninit(unit)
 		    if (si && si->sin_addr.s_addr)
 			    tp->tun_flags |= TUN_DSTADDR;
 		}
-
+#endif
+	}
 	return 0;
 }
 
@@ -574,6 +578,7 @@ tunwrite(dev, uio, flag)
 	}
 #endif
 
+#ifdef INET
 	s = splimp();
 	if (IF_QFULL (&ipintrq)) {
 		IF_DROP(&ipintrq);
@@ -587,6 +592,7 @@ tunwrite(dev, uio, flag)
 	ifp->if_ibytes += tlen;
 	ifp->if_ipackets++;
 	schednetisr(NETISR_IP);
+#endif
 	return error;
 }
 
diff --git a/sys/net/route.c b/sys/net/route.c
index 85cf677e46d7..f24b5001ffd1 100644
--- a/sys/net/route.c
+++ b/sys/net/route.c
@@ -31,9 +31,10 @@
  * SUCH DAMAGE.
  *
  *	@(#)route.c	8.2 (Berkeley) 11/15/93
- *	$Id: route.c,v 1.44 1997/09/16 11:43:46 bde Exp $
+ *	$Id: route.c,v 1.45 1997/10/28 15:58:35 bde Exp $
  */
 
+#include "opt_inet.h"
 #include "opt_mrouting.h"
 
 #include <sys/param.h>
diff --git a/sys/netatalk/at_extern.h b/sys/netatalk/at_extern.h
index 07454253e963..9d1c46765860 100644
--- a/sys/netatalk/at_extern.h
+++ b/sys/netatalk/at_extern.h
@@ -1,5 +1,5 @@
 
-#ifdef _NETINET_IF_ETHER_H_
+#ifdef _NET_IF_ARP_H_
 extern timeout_t	aarpprobe;
 extern int	aarpresolve	__P((struct arpcom *,
 					struct mbuf *,
diff --git a/sys/netinet/if_atm.c b/sys/netinet/if_atm.c
index 81a955bbf74f..c5dfd3b1c43d 100644
--- a/sys/netinet/if_atm.c
+++ b/sys/netinet/if_atm.c
@@ -36,6 +36,8 @@
  * IP <=> ATM address resolution.
  */
 
+#include "opt_inet.h"
+
 #ifdef INET
 
 #include <sys/param.h>
diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c
index 7ffa7cb659f0..5906864f38b7 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 1.41 1997/10/28 15:58:40 bde Exp $
+ * $Id: if_ether.c,v 1.42 1997/12/20 00:07:11 bde Exp $
  */
 
 /*
@@ -40,6 +40,8 @@
  *	add "inuse/lock" bit (or ref. count) along with valid bit
  */
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/sysctl.h>
@@ -108,7 +110,9 @@ static void	arptfree __P((struct llinfo_arp *));
 static void	arptimer __P((void *));
 static struct llinfo_arp
 		*arplookup __P((u_long, int, int));
+#ifdef INET
 static void	in_arpinput __P((struct mbuf *));
+#endif
 
 /*
  * Timeout routine.  Age arp_tab entries periodically.
@@ -209,6 +213,7 @@ arp_rtrequest(req, rt, sa)
 		rt->rt_flags |= RTF_LLINFO;
 		LIST_INSERT_HEAD(&llinfo_arp, la, la_le);
 
+#ifdef INET
 		/*
 		 * This keeps the multicast addresses from showing up
 		 * in `arp -a' listings as unresolved.  It's not actually
@@ -225,6 +230,7 @@ arp_rtrequest(req, rt, sa)
 			SDL(gate)->sdl_alen = 6;
 			rt->rt_expire = 0;
 		}
+#endif
 
 		if (SIN(rt_key(rt))->sin_addr.s_addr ==
 		    (IA_SIN(rt->rt_ifa))->sin_addr.s_addr) {
@@ -406,9 +412,11 @@ arpintr()
 
 			    switch (ntohs(ar->ar_pro)) {
 
+#ifdef INET
 			    case ETHERTYPE_IP:
 				    in_arpinput(m);
 				    continue;
+#endif
 			    }
 		m_freem(m);
 	}
@@ -416,6 +424,8 @@ arpintr()
 
 NETISR_SET(NETISR_ARP, arpintr);
 
+
+#ifdef INET
 /*
  * ARP for Internet protocols on 10 Mb/s Ethernet.
  * Algorithm is that given in RFC 826.
@@ -566,6 +576,7 @@ in_arpinput(m)
 	(*ac->ac_if.if_output)(&ac->ac_if, m, &sa, (struct rtentry *)0);
 	return;
 }
+#endif
 
 /*
  * Free an arp entry.
diff --git a/sys/netinet/if_ether.h b/sys/netinet/if_ether.h
index 3a989e7bf712..3540119748c5 100644
--- a/sys/netinet/if_ether.h
+++ b/sys/netinet/if_ether.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if_ether.h	8.3 (Berkeley) 5/2/95
- *	$Id$
+ *	$Id: if_ether.h,v 1.20 1997/02/22 09:41:25 peter Exp $
  */
 
 #ifndef _NETINET_IF_ETHER_H_
@@ -77,21 +77,6 @@ struct	ether_arp {
 #define	arp_pln	ea_hdr.ar_pln
 #define	arp_op	ea_hdr.ar_op
 
-
-/*
- * Structure shared between the ethernet driver modules and
- * the address resolution code.  For example, each ec_softc or il_softc
- * begins with this structure.
- */
-struct	arpcom {
-	/*
-	 * The ifnet struct _must_ be at the head of this structure.
-	 */
-	struct 	ifnet ac_if;		/* network-visible interface */
-	u_char	ac_enaddr[ETHER_ADDR_LEN];		/* ethernet hardware address */
-	int	ac_multicnt;		/* length of ac_multiaddrs list */
-};
-
 struct sockaddr_inarp {
 	u_char	sin_len;
 	u_char	sin_family;
@@ -109,7 +94,6 @@ struct sockaddr_inarp {
 #define RTF_ANNOUNCE	RTF_PROTO2	/* announce new arp entry */
 
 #ifdef	KERNEL
-extern u_char	etherbroadcastaddr[ETHER_ADDR_LEN];
 extern u_char	ether_ipmulticast_min[ETHER_ADDR_LEN];
 extern u_char	ether_ipmulticast_max[ETHER_ADDR_LEN];
 extern struct	ifqueue arpintrq;
diff --git a/sys/netinet/ip_divert.c b/sys/netinet/ip_divert.c
index 4e05b4fa9f4e..7834c0a849bf 100644
--- a/sys/netinet/ip_divert.c
+++ b/sys/netinet/ip_divert.c
@@ -30,9 +30,15 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: ip_divert.c,v 1.15 1997/09/14 03:10:39 peter Exp $
+ *	$Id: ip_divert.c,v 1.16 1997/12/18 09:13:34 davidg Exp $
  */
 
+#include "opt_inet.h"
+
+#ifndef INET
+#error IPDIVERT requires INET.
+#endif
+
 #include <sys/param.h>
 #include <sys/malloc.h>
 #include <sys/mbuf.h>
diff --git a/sys/netinet/ip_fw.c b/sys/netinet/ip_fw.c
index c5174ab1da11..a2295a8cbb92 100644
--- a/sys/netinet/ip_fw.c
+++ b/sys/netinet/ip_fw.c
@@ -12,7 +12,7 @@
  *
  * This software is provided ``AS IS'' without any warranties of any kind.
  *
- *	$Id: ip_fw.c,v 1.71 1998/01/05 00:57:15 alex Exp $
+ *	$Id: ip_fw.c,v 1.72 1998/01/08 03:03:53 alex Exp $
  */
 
 /*
@@ -22,6 +22,10 @@
 #ifndef IPFIREWALL_MODULE
 #include "opt_ipfw.h"
 #include "opt_ipdivert.h"
+#include "opt_inet.h"
+#ifndef INET
+#error IPFIREWALL requires INET.
+#endif /* INET */
 #endif
 
 #include <sys/param.h>
diff --git a/sys/netinet/tcp_debug.c b/sys/netinet/tcp_debug.c
index 3b0edd818441..d7a1d4ea247d 100644
--- a/sys/netinet/tcp_debug.c
+++ b/sys/netinet/tcp_debug.c
@@ -31,11 +31,16 @@
  * SUCH DAMAGE.
  *
  *	@(#)tcp_debug.c	8.1 (Berkeley) 6/10/93
- * $Id: tcp_debug.c,v 1.10 1997/08/02 14:32:55 bde Exp $
+ * $Id: tcp_debug.c,v 1.11 1997/09/16 18:36:04 joerg Exp $
  */
 
+#include "opt_inet.h"
 #include "opt_tcpdebug.h"
 
+#ifndef INET
+#error The option TCPDEBUG requires option INET.
+#endif
+
 #ifdef TCPDEBUG
 /* load symbolic names */
 #define PRUREQUESTS
diff --git a/sys/netipx/ipx_ip.c b/sys/netipx/ipx_ip.c
index 822144aa3428..73330a293217 100644
--- a/sys/netipx/ipx_ip.c
+++ b/sys/netipx/ipx_ip.c
@@ -33,16 +33,21 @@
  * 
  *	@(#)ipx_ip.c
  *
- * $Id: ipx_ip.c,v 1.17 1997/12/15 20:31:13 eivind Exp $
+ * $Id: ipx_ip.c,v 1.18 1997/12/21 16:35:12 bde Exp $
  */
 
 /*
  * Software interface driver for encapsulating IPX in IP.
  */
 
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #ifdef IPXIP
+#ifndef INET
+#error The option IPXIP requires option INET.
+#endif
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/malloc.h>
diff --git a/sys/netipx/spx_debug.c b/sys/netipx/spx_debug.c
index 2cc1317f533e..624ea3b4b2c7 100644
--- a/sys/netipx/spx_debug.c
+++ b/sys/netipx/spx_debug.c
@@ -33,9 +33,10 @@
  *
  *	@(#)spx_debug.c
  *
- * $Id: spx_debug.c,v 1.10 1997/06/26 19:36:00 jhay Exp $
+ * $Id: spx_debug.c,v 1.11 1997/10/28 12:24:26 bde Exp $
  */
 
+#include "opt_inet.h"
 #include "opt_tcpdebug.h"
 
 #include <sys/param.h>
diff --git a/sys/netns/spp_debug.c b/sys/netns/spp_debug.c
index f979a1ec9b89..88adcab67d40 100644
--- a/sys/netns/spp_debug.c
+++ b/sys/netns/spp_debug.c
@@ -31,9 +31,11 @@
  * SUCH DAMAGE.
  *
  *	@(#)spp_debug.c	8.1 (Berkeley) 6/10/93
- * $Id$
+ * $Id: spp_debug.c,v 1.8 1997/02/22 09:42:25 peter Exp $
  */
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/mbuf.h>
diff --git a/sys/nfs/nfs_vnops.c b/sys/nfs/nfs_vnops.c
index cc20b0e659c4..41b3d969a909 100644
--- a/sys/nfs/nfs_vnops.c
+++ b/sys/nfs/nfs_vnops.c
@@ -34,7 +34,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)nfs_vnops.c	8.16 (Berkeley) 5/27/95
- * $Id: nfs_vnops.c,v 1.73 1997/12/27 02:56:36 bde Exp $
+ * $Id: nfs_vnops.c,v 1.74 1997/12/29 00:23:41 dyson Exp $
  */
 
 
@@ -42,6 +42,8 @@
  * vnode op calls for Sun NFS version 2 and 3
  */
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/systm.h>
@@ -1343,9 +1345,11 @@ nfs_create(ap)
 		if (fmode & O_EXCL) {
 		    *tl = txdr_unsigned(NFSV3CREATE_EXCLUSIVE);
 		    nfsm_build(tl, u_long *, NFSX_V3CREATEVERF);
+#ifdef INET
 		    if (!TAILQ_EMPTY(&in_ifaddrhead))
 			*tl++ = IA_SIN(in_ifaddrhead.tqh_first)->sin_addr.s_addr;
 		    else
+#endif
 			*tl++ = create_verf;
 		    *tl = ++create_verf;
 		} else {
diff --git a/sys/nfsclient/nfs_vnops.c b/sys/nfsclient/nfs_vnops.c
index cc20b0e659c4..41b3d969a909 100644
--- a/sys/nfsclient/nfs_vnops.c
+++ b/sys/nfsclient/nfs_vnops.c
@@ -34,7 +34,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)nfs_vnops.c	8.16 (Berkeley) 5/27/95
- * $Id: nfs_vnops.c,v 1.73 1997/12/27 02:56:36 bde Exp $
+ * $Id: nfs_vnops.c,v 1.74 1997/12/29 00:23:41 dyson Exp $
  */
 
 
@@ -42,6 +42,8 @@
  * vnode op calls for Sun NFS version 2 and 3
  */
 
+#include "opt_inet.h"
+
 #include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/systm.h>
@@ -1343,9 +1345,11 @@ nfs_create(ap)
 		if (fmode & O_EXCL) {
 		    *tl = txdr_unsigned(NFSV3CREATE_EXCLUSIVE);
 		    nfsm_build(tl, u_long *, NFSX_V3CREATEVERF);
+#ifdef INET
 		    if (!TAILQ_EMPTY(&in_ifaddrhead))
 			*tl++ = IA_SIN(in_ifaddrhead.tqh_first)->sin_addr.s_addr;
 		    else
+#endif
 			*tl++ = create_verf;
 		    *tl = ++create_verf;
 		} else {
diff --git a/sys/pc98/pc98/if_ed.c b/sys/pc98/pc98/if_ed.c
index 5264bdb2ce1d..94e33ac2c109 100644
--- a/sys/pc98/pc98/if_ed.c
+++ b/sys/pc98/pc98/if_ed.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ed.c,v 1.35 1997/11/07 12:53:55 kato Exp $
+ *	$Id: if_ed.c,v 1.36 1997/11/25 09:42:25 kato Exp $
  */
 
 /*
@@ -60,6 +60,7 @@
 
 #include "ed.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
diff --git a/sys/pc98/pc98/if_fe.c b/sys/pc98/pc98/if_fe.c
index b6e8ce4d00c7..63bdf25694e5 100644
--- a/sys/pc98/pc98/if_fe.c
+++ b/sys/pc98/pc98/if_fe.c
@@ -21,7 +21,7 @@
  */
 
 /*
- * $Id: if_fe.c,v 1.27 1997/11/25 09:42:25 kato Exp $
+ * $Id: if_fe.c,v 1.28 1997/12/15 20:31:17 eivind Exp $
  *
  * Device driver for Fujitsu MB86960A/MB86965A based Ethernet cards.
  * To be used with FreeBSD 2.x
@@ -75,10 +75,10 @@
  *  o   To test IPX codes.
  */
 
-#include "opt_ipx.h"
-
 #include "fe.h"
 #include "bpfilter.h"
+#include "opt_inet.h"
+#include "opt_ipx.h"
 
 #include <sys/param.h>
 #include <sys/kernel.h>
diff --git a/sys/pc98/pc98/lpt.c b/sys/pc98/pc98/lpt.c
index 6d574f8c263c..6fe025686271 100644
--- a/sys/pc98/pc98/lpt.c
+++ b/sys/pc98/pc98/lpt.c
@@ -46,7 +46,7 @@
  * SUCH DAMAGE.
  *
  *	from: unknown origin, 386BSD 0.1
- *	$Id: lpt.c,v 1.14 1997/09/02 10:11:04 kato Exp $
+ *	$Id: lpt.c,v 1.15 1997/12/02 21:06:52 phk Exp $
  */
 
 /*
@@ -102,6 +102,7 @@
  */
 
 #include "lpt.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
diff --git a/sys/pci/if_de.c b/sys/pci/if_de.c
index f94d42fa6821..a822ea4946c2 100644
--- a/sys/pci/if_de.c
+++ b/sys/pci/if_de.c
@@ -1,5 +1,5 @@
 /*	$NetBSD: if_de.c,v 1.56 1997/10/20 14:32:46 matt Exp $	*/
-/*	$Id: if_de.c,v 1.75 1997/11/22 06:45:57 bde Exp $ */
+/*	$Id: if_de.c,v 1.76 1997/12/15 20:31:25 eivind Exp $ */
 
 /*-
  * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
@@ -39,6 +39,7 @@
  */
 #define	TULIP_HDR_DATA
 
+#include "opt_inet.h"
 #include "opt_ipx.h"
 
 #include <sys/param.h>
@@ -82,6 +83,7 @@
 
 #ifdef INET
 #include <netinet/in.h>
+#include <netinet/if_ether.h>
 #endif
 
 #ifdef IPX
@@ -99,7 +101,8 @@
 #if defined(__FreeBSD__)
 #include <vm/pmap.h>
 #include <pci.h>
-#include <netinet/if_ether.h>
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 #if NPCI > 0
 #include <pci/pcivar.h>
 #include <pci/dc21040reg.h>
diff --git a/sys/pci/if_fpa.c b/sys/pci/if_fpa.c
index 0dab3560d715..b0b38f063207 100644
--- a/sys/pci/if_fpa.c
+++ b/sys/pci/if_fpa.c
@@ -21,7 +21,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: if_fpa.c,v 1.3 1997/03/24 11:24:51 bde Exp $
+ * $Id: if_fpa.c,v 1.4 1997/08/02 14:33:10 bde Exp $
  *
  */
 
@@ -31,6 +31,7 @@
  *   This module supports the DEC DEFPA PCI FDDI Controller
  */
 
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -48,6 +49,8 @@
 
 #if defined(__FreeBSD__)
 #include "fpa.h"
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 #include <pci/pcivar.h>
 #include <dev/pdq/pdqvar.h>
 #include <dev/pdq/pdqreg.h>
diff --git a/sys/pci/if_fxp.c b/sys/pci/if_fxp.c
index ef3284f78c9b..ef0a28000c74 100644
--- a/sys/pci/if_fxp.c
+++ b/sys/pci/if_fxp.c
@@ -27,7 +27,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_fxp.c,v 1.45 1997/10/23 01:45:15 davidg Exp $
+ *	$Id: if_fxp.c,v 1.46 1997/10/28 15:59:21 bde Exp $
  */
 
 /*
@@ -35,6 +35,7 @@
  */
 
 #include "bpfilter.h"
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -49,6 +50,7 @@
 
 #ifdef INET
 #include <netinet/in.h>
+#include <netinet/if_ether.h>
 #endif
 
 #ifdef NS
@@ -94,7 +96,8 @@
 
 #include <sys/sockio.h>
 
-#include <netinet/if_ether.h>
+#include <net/ethernet.h>
+#include <net/if_arp.h>
 
 #include <vm/vm.h>		/* for vtophys */
 #include <vm/pmap.h>		/* for vtophys */
diff --git a/sys/pci/if_vx_pci.c b/sys/pci/if_vx_pci.c
index b667b89bb4d9..bce0de98f560 100644
--- a/sys/pci/if_vx_pci.c
+++ b/sys/pci/if_vx_pci.c
@@ -33,19 +33,23 @@
 
 #include "vx.h"
 #if NVX > 0
+#include "opt_inet.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/socket.h>
 
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <net/if_arp.h>
 
 #ifdef INET
 #include <netinet/in.h>
 #include <netinet/if_ether.h>
 #endif
 
+
 #ifdef NS
 #include <netns/ns.h>
 #include <netns/ns_if.h>