diff --git a/sys/net/if.c b/sys/net/if.c
index 8f2627915129..8c6c24cf9187 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -494,19 +494,12 @@ if_free_internal(struct ifnet *ifp)
 }
 
 /*
- * This version should only be called by intefaces that switch their type
- * after calling if_alloc().  if_free_type() will go away again now that we
- * have if_alloctype to cache the original allocation type.  For now, assert
- * that they match, since we require that in practice.
+ * Deregister an interface and free the associated storage.
  */
 void
-if_free_type(struct ifnet *ifp, u_char type)
+if_free(struct ifnet *ifp)
 {
 
-	KASSERT(ifp->if_alloctype == type,
-	    ("if_free_type: type (%d) != alloctype (%d)", type,
-	    ifp->if_alloctype));
-
 	ifp->if_flags |= IFF_DYING;			/* XXX: Locking */
 
 	IFNET_WLOCK();
@@ -521,18 +514,6 @@ if_free_type(struct ifnet *ifp, u_char type)
 	if_free_internal(ifp);
 }
 
-/*
- * This is the normal version of if_free(), used by device drivers to free a
- * detached network interface.  The contents of if_free_type() will move into
- * here when if_free_type() goes away.
- */
-void
-if_free(struct ifnet *ifp)
-{
-
-	if_free_type(ifp, ifp->if_alloctype);
-}
-
 /*
  * Interfaces to keep an ifnet type-stable despite the possibility of the
  * driver calling if_free().  If there are additional references, we defer
diff --git a/sys/net/if_var.h b/sys/net/if_var.h
index e06a086d0d1c..1cb84400172c 100644
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -865,7 +865,6 @@ void	if_down(struct ifnet *);
 struct ifmultiaddr *
 	if_findmulti(struct ifnet *, struct sockaddr *);
 void	if_free(struct ifnet *);
-void	if_free_type(struct ifnet *, u_char);
 void	if_initname(struct ifnet *, const char *, int);
 void	if_link_state_change(struct ifnet *, int);
 int	if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);