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: src/share/man/man5/networks.5,v 1.5.2.3 2001/08/17 13:08:47 ru Exp $ 30.\" $DragonFly: src/share/man/man5/networks.5,v 1.3 2006/02/17 19:37:10 swildner Exp $ 31.\" 32.Dd June 5, 1993 33.Dt NETWORKS 5 34.Os 35.Sh NAME 36.Nm networks 37.Nd network name data base 38.Sh DESCRIPTION 39The 40.Nm 41file contains information regarding 42the known networks which comprise the 43.Tn DARPA 44Internet. 45For each network a single line should be present with the following information: 46.Bd -unfilled -offset indent 47official network name 48network number 49aliases 50.Ed 51.Pp 52Items are separated by any number of blanks and/or tab characters. 53A ``#'' indicates the beginning of a comment; characters up to the end of 54the line are not interpreted by routines which search the file. 55This file is normally created from the official network data base 56maintained at the Network Information Control Center 57.Pq Tn NIC , 58though local 59changes may be required to bring it up to date regarding unofficial aliases 60and/or unknown networks. 61.Pp 62Network numbers may be specified in the conventional 63``.'' (dot) notation using the 64.Xr inet_network 3 65routine 66from the Internet address manipulation library, 67.Xr inet 3 . 68Network names may contain any printable character other than a field 69delimiter, newline, or comment character. 70.Sh FILES 71.Bl -tag -width /etc/networks -compact 72.It Pa /etc/networks 73The 74.Nm 75file resides in 76.Pa /etc . 77.El 78.Sh SEE ALSO 79.Xr getnetent 3 80.Sh HISTORY 81The 82.Nm 83file format appeared in 84.Bx 4.2 . 85.Sh BUGS 86A name server should be used instead of a static file. 87