11-24-2010
How to add/remove additional DNS and IP to AIX
Hello,
How to add/remove additional DNS and IP to AIX ?
I wanted to add 3 more new DNS and IP addresses to existing AIX 5.2.
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LEARN ABOUT REDHAT
net::dns::nameserver
Net::DNS::Nameserver(3) User Contributed Perl Documentation Net::DNS::Nameserver(3)
NAME
Net::DNS::Nameserver - DNS server class
SYNOPSIS
"use Net::DNS::Nameserver;"
DESCRIPTION
Instances of the "Net::DNS::Nameserver" class represent simple DNS server objects. See "EXAMPLE" for an example.
METHODS
new
my $ns = Net::DNS::Nameserver->new(
LocalAddr => "10.1.2.3",
LocalPort => "5353",
ReplyHandler => &reply_handler,
Verbose => 1
);
Creates a nameserver object. Attributes are:
LocalAddr IP address on which to listen. Defaults to INADDR_ANY.
LocalPort Port on which to listen. Defaults to 53.
ReplyHandler Reference to reply-handling subroutine. Required.
Verbose Print info about received queries. Defaults to 0 (off).
The ReplyHandler subroutine is passed the query name, query class, and query type. It must return the response code and references to
the answer, authority, and additional sections of the response. Common response codes are:
NOERROR No error
FORMERR Format error
SERVFAIL Server failure
NXDOMAIN Non-existent domain (name doesn't exist)
NOTIMP Not implemented
REFUSED Query refused
See RFC 1035 and the IANA dns-parameters file for more information:
ftp://ftp.rfc-editor.org/in-notes/rfc1035.txt
http://www.isi.edu/in-notes/iana/assignments/dns-parameters
The nameserver will listen for both UDP and TCP connections. On Unix-like systems, the program will probably have to run as root to listen
on the default port, 53. A non-privileged user should be able to listen on ports 1024 and higher.
Returns a Net::DNS::Nameserver object, or undef if the object couldn't be created.
See "EXAMPLE" for an example.
main_loop
$ns->main_loop;
Start accepting queries.
EXAMPLE
The following example will listen on port 5353 and respond to all queries for A records with the IP address 10.1.2.3. All other queries
will be answered with NXDOMAIN. Authority and additional sections are left empty.
#!/usr/bin/perl -Tw
use Net::DNS;
use strict;
sub reply_handler {
my ($qname, $qclass, $qtype) = @_;
my ($rcode, @ans, @auth, @add);
if ($qtype eq "A") {
my ($ttl, $rdata) = (3600, "10.1.2.3");
push @ans, Net::DNS::RR->new("$qname $ttl $qclass $qtype $rdata");
$rcode = "NOERROR";
}
else {
$rcode = "NXDOMAIN";
}
return ($rcode, @ans, @auth, @add);
}
my $ns = Net::DNS::Nameserver->new(
LocalPort => 5353,
ReplyHandler => &reply_handler,
Verbose => 1
);
if ($ns) {
$ns->main_loop;
}
else {
die "couldn't create nameserver object
";
}
BUGS
Net::DNS::Nameserver objects can handle only one query at a time.
COPYRIGHT
Copyright (c) 2000-2002 Michael Fuhr. All rights reserved. This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
SEE ALSO
perl(1), Net::DNS, Net::DNS::Resolver, Net::DNS::Packet, Net::DNS::Update, Net::DNS::Header, Net::DNS::Question, Net::DNS::RR, RFC 1035
perl v5.8.0 2002-05-31 Net::DNS::Nameserver(3)