1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)networks.5 8.1 (Berkeley) 6/5/93 29.\" $FreeBSD$ 30.\" 31.Dd June 5, 1993 32.Dt NETWORKS 5 33.Os 34.Sh NAME 35.Nm networks 36.Nd network name data base 37.Sh DESCRIPTION 38The 39.Nm 40file contains information regarding 41the known networks which comprise the 42.Tn DARPA 43Internet. 44For each network a single line should be present with the following information: 45.Bd -unfilled -offset indent 46official network name 47network number 48aliases 49.Ed 50.Pp 51Items are separated by any number of blanks and/or tab characters. 52A ``#'' indicates the beginning of a comment; characters up to the end of 53the line are not interpreted by routines which search the file. 54This file is normally created from the official network data base 55maintained at the Network Information Control Center 56.Pq Tn NIC , 57though local 58changes may be required to bring it up to date regarding unofficial aliases 59and/or unknown networks. 60.Pp 61Network numbers may be specified in the conventional 62``.'' (dot) notation using the 63.Xr inet_network 3 64routine 65from the Internet address manipulation library, 66.Xr inet 3 . 67Network names may contain any printable character other than a field 68delimiter, newline, or comment character. 69.Sh FILES 70.Bl -tag -width /etc/networks -compact 71.It Pa /etc/networks 72The 73.Nm 74file resides in 75.Pa /etc . 76.El 77.Sh SEE ALSO 78.Xr getnetent 3 79.Sh HISTORY 80The 81.Nm 82file format appeared in 83.Bx 4.2 . 84.Sh BUGS 85A name server should be used instead of a static file. 86