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-.\" ++Copyright++ 1986, 1988
-.\" -
-.\" Copyright (c) 1986, 1988
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\" -
-.\" Portions Copyright (c) 1993 by Digital Equipment Corporation.
-.\"
-.\" Permission to use, copy, modify, and distribute this software for any
-.\" purpose with or without fee is hereby granted, provided that the above
-.\" copyright notice and this permission notice appear in all copies, and that
-.\" the name of Digital Equipment Corporation not be used in advertising or
-.\" publicity pertaining to distribution of the document or software without
-.\" specific, written prior permission.
-.\"
-.\" THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
-.\" WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
-.\" OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
-.\" CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
-.\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
-.\" PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
-.\" ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-.\" SOFTWARE.
-.\" -
-.\" --Copyright--
-.\"
-.\" @(#)ns.me 6.3 (Berkeley) 9/19/89
-.\"
-.sh 1 "The Name Service"
-.pp
-The basic function of the name server is to provide information about network
-objects by answering queries. The specifications for this name server are
-defined in RFC1034, RFC1035 and RFC974. These documents can be found in
-\fI/usr/src/etc/named/doc\fP in 4.3BSD or \fIftp\fPed from
-\fBftp.rs.internic.net\fP.
-It is also recommended that you read the related manual pages,
-\fInamed\fP\|(8),
-\fIresolver\fP\|(3),
-and \fIresolver\fP\|(5).
-.pp
-The advantage of using a name server over the host table lookup for host
-name resolution is to avoid the need for a single centralized clearinghouse
-for all names. The authority for this information can be delegated to the
-different organizations on the network responsible for it.
-.pp
-The host table lookup routines require that the master file for the entire
-network be maintained at a central location by a few people. This works
-fine for small networks where there are only a few machines and the
-different organizations responsible for them cooperate. But this does not
-work well for large networks where machines cross organizational boundaries.
-.pp
-With the name server, the network can be broken into a hierarchy of domains.
-The name space is organized as a tree according to organizational or
-administrative boundaries.
-Each node, called a \fIdomain\fP, is given a label, and the name of the
-domain is the concatenation of all the labels of the domains from
-the root to the current domain, listed from right to left separated by dots.
-A label need only be unique within its domain.
-The whole space is partitioned into several areas called \fIzones\fP,
-each starting at a domain and extending down to the leaf domains or to
-domains where other zones start.
-Zones usually represent administrative boundaries.
-An example of a host address for a host at the University of California,
-Berkeley would look as follows:
-.(b
-\fImonet\fP\|\fB.\fP\|\fIBerkeley\fP\|\fB.\fP\|\fIEDU\fP
-.)b
-The top level domain for educational organizations is EDU;
-Berkeley is a subdomain of EDU and monet is the name of the host.
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