netconfig man page on Archlinux

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NETCONFIG(5)		    BSD File Formats Manual		  NETCONFIG(5)

     netconfig — network configuration data base


     The netconfig file defines a list of “transport names”, describing their
     semantics and protocol.  In FreeBSD, this file is only used by the RPC
     library code.

     Entries have the following format:

     network_id semantics flags family protoname device libraries

     Entries consist of the following fields:

     network_id	 The name of the transport described.

     semantics	 Describes the semantics of the transport.  This can be one

		       tpi_clts	     Connectionless transport.

		       tpi_cots	     Connection-oriented transport

		       tpi_cots_ord  Connection-oriented, ordered transport.

		       tpi_raw	     A raw connection.

     flags	 This field is either blank (specified by “-”), or contains a
		 “v”, meaning visible to the getnetconfig(3) function.

     family	 The protocol family of the transport.	This is currently one

		       inet6	 The IPv6 (PF_INET6) family of protocols.

		       inet	 The IPv4 (PF_INET) family of protocols.

		       loopback	 The PF_LOCAL protocol family.

     protoname	 The name of the protocol used for this transport.  Can cur‐
		 rently be either udp, tcp or empty.

     device	 This field is always empty in FreeBSD.

     libraries	 This field is always empty in FreeBSD.

     The order of entries in this file will determine which transport will be
     preferred by the RPC library code, given a match on a specified network
     type.  For example, if a sample network config file would look like this:

	   udp6	      tpi_clts	    v	  inet6	   udp	   -	   -
	   tcp6	      tpi_cots_ord  v	  inet6	   tcp	   -	   -
	   udp	      tpi_clts	    v	  inet	   udp	   -	   -
	   tcp	      tpi_cots_ord  v	  inet	   tcp	   -	   -
	   rawip      tpi_raw	    -	  inet	    -	   -	   -
	   local      tpi_cots_ord  -	  loopback  -	   -	   -

     then using the network type udp in calls to the RPC library function (see
     rpc(3)) will make the code first try udp6, and then udp.

     getnetconfig(3) and associated functions will parse this file and return
     structures of the following format:

     struct netconfig {
	 char *nc_netid;	      /* Network ID */
	 unsigned long nc_semantics;  /* Semantics (see below) */
	 unsigned long nc_flag;	      /* Flags (see below) */
	 char *nc_protofmly;	      /* Protocol family */
	 char *nc_proto;	      /* Protocol name */
	 char *nc_device;	      /* Network device pathname (unused) */
	 unsigned long nc_nlookups;   /* Number of lookup libs (unused) */
	 char **nc_lookups;	      /* Names of the libraries (unused) */
	 unsigned long nc_unused[9];  /* reserved */


     getnetconfig(3), getnetpath(3)

BSD			       November 17, 2000			   BSD

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