IFLA_CARRIER
nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) ||
[IFLA_CARRIER] = { .type = NLA_U8 },
if (tb[IFLA_CARRIER]) {
err = netif_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));