SEG6_IPTUNNEL_SRC
[SEG6_IPTUNNEL_SRC] = NLA_POLICY_EXACT_LEN(sizeof(struct in6_addr)),
if (tb[SEG6_IPTUNNEL_SRC]) {
if (tb[SEG6_IPTUNNEL_SRC]) {
slwt->tunsrc = nla_get_in6_addr(tb[SEG6_IPTUNNEL_SRC]);
nla_put_in6_addr(skb, SEG6_IPTUNNEL_SRC, &slwt->tunsrc))