ip4_dst
__be32 ip4_dst;
ip4_dst = ip_dst ? ip_dst->dst.ip4 : htonl(INADDR_ALLHOSTS_GROUP);
ip4_dst, group->dst.ip4,
else if (iph->saddr == ip4_dst)
redirect = is_remote_ep_v4(skb, __bpf_constant_htonl(ip4_dst));