Index: head/sys/net/if.c
===================================================================
--- head/sys/net/if.c
+++ head/sys/net/if.c
@@ -4263,6 +4263,55 @@
 	return (((struct ifnet *)ifp)->if_mtu);
 }
 
+/*
+ * Methods for drivers to access interface unicast and multicast
+ * link level addresses.  Driver shall not know 'struct ifaddr' neither
+ * 'struct ifmultiaddr'.
+ */
+u_int
+if_foreach_lladdr(if_t ifp, iflladdr_cb_t cb, void *cb_arg)
+{
+	struct epoch_tracker et;
+	struct ifaddr *ifa;
+	u_int count;
+
+	MPASS(cb);
+
+	count = 0;
+	NET_EPOCH_ENTER(et);
+	CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+		if (ifa->ifa_addr->sa_family != AF_LINK)
+			continue;
+		count += (*cb)(cb_arg, (struct sockaddr_dl *)ifa->ifa_addr,
+		    count);
+	}
+	NET_EPOCH_EXIT(et);
+
+	return (count);
+}
+
+u_int
+if_foreach_llmaddr(if_t ifp, iflladdr_cb_t cb, void *cb_arg)
+{
+	struct epoch_tracker et;
+	struct ifmultiaddr *ifma;
+	u_int count;
+
+	MPASS(cb);
+
+	count = 0;
+	NET_EPOCH_ENTER(et);
+	CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+		if (ifma->ifma_addr->sa_family != AF_LINK)
+			continue;
+		count += (*cb)(cb_arg, (struct sockaddr_dl *)ifma->ifma_addr,
+		    count);
+	}
+	NET_EPOCH_EXIT(et);
+
+	return (count);
+}
+
 int
 if_setsoftc(if_t ifp, void *softc)
 {
Index: head/sys/net/if_var.h
===================================================================
--- head/sys/net/if_var.h
+++ head/sys/net/if_var.h
@@ -765,11 +765,20 @@
 void if_etherbpfmtap(if_t ifp, struct mbuf *m);
 void if_vlancap(if_t ifp);
 
-int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max);
-int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max);
+/*
+ * Traversing through interface address lists.
+ */
+struct sockaddr_dl;
+typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int);
+u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *);
+u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *);
 int if_multiaddr_count(if_t ifp, int max);
 
+/* Obsoleted multicast management functions. */
+int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max);
+int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max);
 int if_multi_apply(struct ifnet *ifp, int (*filter)(void *, struct ifmultiaddr *, int), void *arg);
+
 int if_getamcount(if_t ifp);
 struct ifaddr * if_getifaddr(if_t ifp);