IOAM6_IPTUNNEL_MAX
struct nlattr *tb[IOAM6_IPTUNNEL_MAX + 1];
err = nla_parse_nested(tb, IOAM6_IPTUNNEL_MAX, nla,
static const struct nla_policy ioam6_iptunnel_policy[IOAM6_IPTUNNEL_MAX + 1] = {