rss_hash_ip6_4tuple
hash = rss_hash_ip6_4tuple(s, sp, d, dp);
hash = rss_hash_ip6_4tuple(s, sp, d, dp);
hash = rss_hash_ip6_4tuple(d, dp, s, sp);
hash = rss_hash_ip6_4tuple(d, dp, s, sp);
uint32_t rss_hash_ip6_4tuple(const struct in6_addr *src, u_short srcport,