Index: head/sys/dev/cxgbe/t4_clip.c
===================================================================
--- head/sys/dev/cxgbe/t4_clip.c
+++ head/sys/dev/cxgbe/t4_clip.c
@@ -30,6 +30,9 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include "opt_inet.h"
+#include "opt_inet6.h"
+
 #include <sys/types.h>
 #include <sys/ck.h>
 #include <sys/eventhandler.h>
@@ -47,6 +50,7 @@
 #include "common/common.h"
 #include "t4_clip.h"
 
+#if defined(INET6)
 static int add_lip(struct adapter *, struct in6_addr *);
 static int delete_lip(struct adapter *, struct in6_addr *);
 static struct clip_entry *search_lip(struct adapter *, struct in6_addr *);
@@ -108,11 +112,13 @@
 
 	return (NULL);
 }
+#endif
 
 struct clip_entry *
 t4_hold_lip(struct adapter *sc, struct in6_addr *lip, struct clip_entry *ce)
 {
 
+#ifdef INET6
 	mtx_lock(&sc->clip_table_lock);
 	if (ce == NULL)
 		ce = search_lip(sc, lip);
@@ -121,12 +127,16 @@
 	mtx_unlock(&sc->clip_table_lock);
 
 	return (ce);
+#else
+	return (NULL);
+#endif
 }
 
 void
 t4_release_lip(struct adapter *sc, struct clip_entry *ce)
 {
 
+#ifdef INET6
 	mtx_lock(&sc->clip_table_lock);
 	KASSERT(search_lip(sc, &ce->lip) == ce,
 	    ("%s: CLIP entry %p p not in CLIP table.", __func__, ce));
@@ -134,8 +144,10 @@
 	    ("%s: CLIP entry %p has refcount 0", __func__, ce));
 	--ce->refcount;
 	mtx_unlock(&sc->clip_table_lock);
+#endif
 }
 
+#ifdef INET6
 void
 t4_init_clip_table(struct adapter *sc)
 {
@@ -380,3 +392,4 @@
 	EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_evhandler);
 	taskqueue_cancel_timeout(taskqueue_thread, &clip_task, NULL);
 }
+#endif
Index: head/sys/dev/cxgbe/t4_main.c
===================================================================
--- head/sys/dev/cxgbe/t4_main.c
+++ head/sys/dev/cxgbe/t4_main.c
@@ -1222,7 +1222,9 @@
 #ifdef RATELIMIT
 	t4_init_etid_table(sc);
 #endif
+#ifdef INET6
 	t4_init_clip_table(sc);
+#endif
 	if (sc->vres.key.size != 0)
 		sc->key_map = vmem_create("T4TLS key map", sc->vres.key.start,
 		    sc->vres.key.size, 32, 0, M_FIRSTFIT | M_WAITOK);
@@ -1513,7 +1515,9 @@
 #endif
 	if (sc->key_map)
 		vmem_destroy(sc->key_map);
+#ifdef INET6
 	t4_destroy_clip_table(sc);
+#endif
 
 #if defined(TCP_OFFLOAD) || defined(RATELIMIT)
 	free(sc->sge.ofld_txq, M_CXGBE);
@@ -5967,9 +5971,11 @@
 	    CTLTYPE_STRING | CTLFLAG_RD, sc, 0,
 	    sysctl_smt, "A", "hardware source MAC table");
 
+#ifdef INET6
 	SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "clip",
 	    CTLTYPE_STRING | CTLFLAG_RD, sc, 0,
 	    sysctl_clip, "A", "active CLIP table entries");
+#endif
 
 	SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "lb_stats",
 	    CTLTYPE_STRING | CTLFLAG_RD, sc, 0,
@@ -10527,7 +10533,9 @@
 			sx_init(&t4_uld_list_lock, "T4/T5 ULDs");
 			SLIST_INIT(&t4_uld_list);
 #endif
+#ifdef INET6
 			t4_clip_modload();
+#endif
 			t4_tracer_modload();
 			tweak_tunables();
 		}
@@ -10567,7 +10575,9 @@
 
 			if (t4_sge_extfree_refs() == 0) {
 				t4_tracer_modunload();
+#ifdef INET6
 				t4_clip_modunload();
+#endif
 #ifdef TCP_OFFLOAD
 				sx_destroy(&t4_uld_list_lock);
 #endif