+ if (!tb[NOTIFY_IFNAME]) {
+ if (!state->proto.iface->main_dev.dev)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+ } else if (!state->l3_dev.dev) {
+ device_add_user(&state->l3_dev,
+ device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
+ device_claim(&state->l3_dev);
+ state->proto.iface->l3_dev = &state->l3_dev;
+ }
+
+ interface_ip_update_start(state->proto.iface);
+