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-.\" Copyright (c) 2000 Manoj Srivastava <srivasta@debian.org>
-.\"
-.\" SPDX-License-Identifier: GPL-2.0-or-later
-.\"
-.\" Minor polishing, aeb
-.\" Modified, 2002-06-16, Mike Coleman
-.\"
-.TH hosts 5 (date) "Linux man-pages (unreleased)"
-.SH NAME
-hosts \- static table lookup for hostnames
-.SH SYNOPSIS
-.nf
-.B /etc/hosts
-.fi
-.SH DESCRIPTION
-This manual page describes the format of the
-.I /etc/hosts
-file.
-This file is a simple text file that associates IP addresses
-with hostnames, one line per IP address.
-For each host a single
-line should be present with the following information:
-.RS
-.PP
-IP_address canonical_hostname [aliases...]
-.RE
-.PP
-The IP address can conform to either IPv4 or IPv6.
-Fields of the entry are separated by any number of blanks and/or
-tab characters.
-Text from a "#" character until the end of the line is
-a comment, and is ignored.
-Host names may contain only alphanumeric
-characters, minus signs ("\-"), and periods (".").
-They must begin with an
-alphabetic character and end with an alphanumeric character.
-Optional aliases provide for name changes, alternate spellings,
-shorter hostnames, or generic hostnames (for example,
-.IR localhost ).
-If required, a host may have two separate entries in this file;
-one for each version of the Internet Protocol (IPv4 and IPv6).
-.PP
-The Berkeley Internet Name Domain (BIND) Server implements the
-Internet name server for UNIX systems.
-It augments or replaces the
-.I /etc/hosts
-file or hostname lookup, and frees a host from relying on
-.I /etc/hosts
-being up to date and complete.
-.PP
-In modern systems, even though the host table has been superseded by
-DNS, it is still widely used for:
-.TP
-.B bootstrapping
-Most systems have a small host table containing the name and address
-information for important hosts on the local network.
-This is useful
-when DNS is not running, for example during system bootup.
-.TP
-.B NIS
-Sites that use NIS use the host table as input to the NIS host
-database.
-Even though NIS can be used with DNS, most NIS sites still
-use the host table with an entry for all local hosts as a backup.
-.TP
-.B isolated nodes
-Very small sites that are isolated from the network use the host table
-instead of DNS.
-If the local information rarely changes, and the
-network is not connected to the Internet, DNS offers little
-advantage.
-.SH FILES
-.I /etc/hosts
-.SH NOTES
-Modifications to this file normally take effect immediately,
-except in cases where the file is cached by applications.
-.SS Historical notes
-RFC\ 952 gave the original format for the host table, though it has
-since changed.
-.PP
-Before the advent of DNS, the host table was the only way of resolving
-hostnames on the fledgling Internet.
-Indeed, this file could be
-created from the official host data base maintained at the Network
-Information Control Center (NIC), though local changes were often
-required to bring it up to date regarding unofficial aliases and/or
-unknown hosts.
-The NIC no longer maintains the hosts.txt files,
-though looking around at the time of writing (circa 2000), there are
-historical hosts.txt files on the WWW.
-I just found three, from 92,
-94, and 95.
-.SH EXAMPLES
-.EX
-# The following lines are desirable for IPv4 capable hosts
-127.0.0.1 localhost
-\&
-# 127.0.1.1 is often used for the FQDN of the machine
-127.0.1.1 thishost.example.org thishost
-192.168.1.10 foo.example.org foo
-192.168.1.13 bar.example.org bar
-146.82.138.7 master.debian.org master
-209.237.226.90 www.opensource.org
-\&
-# The following lines are desirable for IPv6 capable hosts
-::1 localhost ip6\-localhost ip6\-loopback
-ff02::1 ip6\-allnodes
-ff02::2 ip6\-allrouters
-.EE
-.SH SEE ALSO
-.BR hostname (1),
-.BR resolver (3),
-.BR host.conf (5),
-.BR resolv.conf (5),
-.BR resolver (5),
-.BR hostname (7),
-.BR named (8)
-.PP
-Internet RFC\ 952
-.\" .SH AUTHOR
-.\" This manual page was written by Manoj Srivastava <srivasta@debian.org>,
-.\" for the Debian GNU/Linux system.