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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)networks.5 8.1 (Berkeley) 6/5/93 33.\" $FreeBSD: src/share/man/man5/networks.5,v 1.5.2.3 2001/08/17 13:08:47 ru Exp $ 34.\" $DragonFly: src/share/man/man5/networks.5,v 1.2 2003/06/17 04:37:00 dillon Exp $ 35.\" 36.Dd June 5, 1993 37.Dt NETWORKS 5 38.Os 39.Sh NAME 40.Nm networks 41.Nd network name data base 42.Sh DESCRIPTION 43The 44.Nm 45file contains information regarding 46the known networks which comprise the 47.Tn DARPA 48Internet. 49For each network a single line should be present with the following information: 50.Bd -unfilled -offset indent 51official network name 52network number 53aliases 54.Ed 55.Pp 56Items are separated by any number of blanks and/or tab characters. 57A ``#'' indicates the beginning of a comment; characters up to the end of 58the line are not interpreted by routines which search the file. 59This file is normally created from the official network data base 60maintained at the Network Information Control Center 61.Pq Tn NIC , 62though local 63changes may be required to bring it up to date regarding unofficial aliases 64and/or unknown networks. 65.Pp 66Network numbers may be specified in the conventional 67``.'' (dot) notation using the 68.Xr inet_network 3 69routine 70from the Internet address manipulation library, 71.Xr inet 3 . 72Network names may contain any printable character other than a field 73delimiter, newline, or comment character. 74.Sh FILES 75.Bl -tag -width /etc/networks -compact 76.It Pa /etc/networks 77The 78.Nm 79file resides in 80.Pa /etc . 81.El 82.Sh SEE ALSO 83.Xr getnetent 3 84.Sh BUGS 85A name server should be used instead of a static file. 86.Sh HISTORY 87The 88.Nm 89file format appeared in 90.Bx 4.2 . 91