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