(*
			NETDB_INTERNAL* = -1; (* See errno. *)
			NETDB_SUCCESS* = 0; (* No problem. *)
			HOST_NOT_FOUND* = 1; (* Authoritative Answer Host not found. *)
			TRY_AGAIN* = 2; (* Non-Authoritative Host not found, or SERVERFAIL. *)
			NO_RECOVERY* = 3; (* Non recoverable errors, FORMERR, REFUSED, NOTIMP. *)
			NO_DATA* = 4; (* Valid name, no data record of requested type. *)
*)

			EAI_BADFLAGS* = -1; (* Invalid value for `ai_flags' field *)
			EAI_NONAME* = -2; (* NAME or SERVICE is unknown *)
			EAI_AGAIN* = -3; (* Temporary failure in name resolution *)
			EAI_FAIL* = -4; (* Non-recoverable failure in name res *)
			EAI_FAMILY* = -6; (* `ai_family' not supported *)
			EAI_SOCKTYPE* = -7; (* `ai_socktype' not supported *)
			EAI_SERVICE* = -8; (* SERVICE not supported for `ai_socktype' *)
			EAI_MEMORY* = -10; (* Memory allocation failure *)
			EAI_SYSTEM* = -11; (* System error returned in `errno' *)
			EAI_OVERFLOW* = -12; (* Argument buffer overflow *)
			EAI_NODATA* = -5; (* No address associated with NAME *)
			EAI_ADDRFAMILY* = -9; (* Address family for NAME not supported *)
			EAI_INPROGRESS* = -100; (* Processing request in progress *)
			EAI_CANCELED* = -101; (* Request canceled *)
			EAI_NOTCANCELED* = -102; (* Request not canceled *)
			EAI_ALLDONE* = -103; (* All requests done *)
			EAI_INTR* = -104; (* Interrupted by a signal *)
			EAI_IDN_ENCODE* = -105; (* IDN encoding failed *)