if ((cur = tb[IFACE_ATTR_IFNAME])) {
dev = device_get(blobmsg_data(cur), true);
if (dev)
device_add_user(&iface->main_dev, dev);
}
if ((cur = tb[IFACE_ATTR_IFNAME])) {
dev = device_get(blobmsg_data(cur), true);
if (dev)
device_add_user(&iface->main_dev, dev);
}