ns_name_pack
int ns_name_pack(const u_char *, u_char *, int,
return (ns_name_pack(tmp, dst, (int)dstsiz, dnptrs, lastdnptr));
n = ns_name_pack(name, cp, (int)(eob - cp),
n = ns_name_pack(name, cp, (int)(eob - cp), NULL, NULL);