addr argument points to a struct in6_addr and len must be set to sizeof ... struct in6_addr) . RETURN VALUE NULL is returned if an error occurred, and erroraddress is converted to a struct in6_addr and copied to dst , which must ... sizeof(struct in6_addr) (16) bytes (128 bits) long. The allowed formats for IPv6 addressesaddr argument points to a struct in6_addr and len must be set to sizeof ... struct in6_addr) . RETURN VALUE NULL is returned if an error occurred, and erroraddr argument points to a struct in6_addr and len must be set to sizeof ... struct in6_addr) . RETURN VALUE NULL is returned if an error occurred, and errorINET6 src points to a struct in6_addr (in network byte order) which is converted