diff --git a/package/gluon-radv-filterd/src/respondd.c b/package/gluon-radv-filterd/src/respondd.c
index 1e0aa128..7e65a3d9 100644
--- a/package/gluon-radv-filterd/src/respondd.c
+++ b/package/gluon-radv-filterd/src/respondd.c
@@ -12,7 +12,7 @@ static struct json_object * get_radv_filter() {
 	char *line = NULL;
 	size_t len = 0;
 	struct ether_addr mac = {};
-	struct json_object *ret = NULL;
+	struct ether_addr unspec = {};
 	char macstr[F_MAC_LEN + 1] = "";
 
 	if (!f)
@@ -26,17 +26,19 @@ static struct json_object * get_radv_filter() {
 
 	pclose(f);
 
-	snprintf(macstr, sizeof(macstr), F_MAC, F_MAC_VAR(mac));
-	ret = gluonutil_wrap_string(macstr);
-	return ret;
+	memset(&unspec, 0, sizeof(unspec));
+	if (ether_addr_equal(mac, unspec)) {
+		return NULL;
+	} else {
+		snprintf(macstr, sizeof(macstr), F_MAC, F_MAC_VAR(mac));
+		return gluonutil_wrap_string(macstr);
+	}
 }
 
 static struct json_object * respondd_provider_statistics() {
 	struct json_object *ret = json_object_new_object();
 
-	struct json_object *radv_filter = get_radv_filter();
-	if (radv_filter)
-		json_object_object_add(ret, "gateway6", radv_filter);
+	json_object_object_add(ret, "gateway6", get_radv_filter());
 
 	return ret;
 }