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.\" $FreeBSD$ 34.\" 35.Dd June 5, 1993 36.Dt NETWORKS 5 37.Os 38.Sh NAME 39.Nm networks 40.Nd network name data base 41.Sh DESCRIPTION 42The 43.Nm 44file contains information regarding 45the known networks which comprise the 46.Tn DARPA 47Internet. 48For each network a single line should be present with the following information: 49.Bd -unfilled -offset indent 50official network name 51network number 52aliases 53.Ed 54.Pp 55Items are separated by any number of blanks and/or tab characters. 56A ``#'' indicates the beginning of a comment; characters up to the end of 57the line are not interpreted by routines which search the file. 58This file is normally created from the official network data base 59maintained at the Network Information Control Center 60.Pq Tn NIC , 61though local 62changes may be required to bring it up to date regarding unofficial aliases 63and/or unknown networks. 64.Pp 65Network numbers may be specified in the conventional 66``.'' (dot) notation using the 67.Xr inet_network 3 68routine 69from the Internet address manipulation library, 70.Xr inet 3 . 71Network names may contain any printable character other than a field 72delimiter, newline, or comment character. 73.Sh FILES 74.Bl -tag -width /etc/networks -compact 75.It Pa /etc/networks 76The 77.Nm 78file resides in 79.Pa /etc . 80.El 81.Sh SEE ALSO 82.Xr getnetent 3 83.Sh HISTORY 84The 85.Nm 86file format appeared in 87.Bx 4.2 . 88.Sh BUGS 89A name server should be used instead of a static file. 90