LWTUNNEL_IP6_HOPLIMIT
if (tb[LWTUNNEL_IP6_HOPLIMIT])
tun_info->key.ttl = nla_get_u8(tb[LWTUNNEL_IP6_HOPLIMIT]);
nla_put_u8(skb, LWTUNNEL_IP6_HOPLIMIT, tun_info->key.ttl) ||
[LWTUNNEL_IP6_HOPLIMIT] = { .type = NLA_U8 },