IFLA_IPTUN_6RD_RELAY_PREFIXLEN
if (data[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]) {
nla_get_u16(data[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]);
nla_put_u16(skb, IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
[IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NLA_U16 },