
  TYPE
    nat$sk_socket_option_kind = (nac$sk_null_opt,
      nac$sk_interface_mode_opt, nac$sk_interface_timeout_opt,
      nac$sk_checksum_opt, nac$sk_traffic_pattern_opt,
      nac$sk_graceful_close_opt, nac$sk_selection_criteria_opt,
      nac$sk_local_addr_enabled_opt, nac$sk_user_cache_enabled_opt,
      nac$sk_reuse_address_opt, nac$sk_broadcast_enabled_opt);
