NAME
Net::DNS::Update - Create a DNS update packet
SYNOPSIS
use Net::DNS::Update;
DESCRIPTION
Net::DNS::Update is a front-end for creating Net::DNS::Packet objects to be used for making DNS dynamic updates. Programmers should refer to RFC 2136 for the semantics of dynamic updates.
WARNING: This code is still under development and shouldn't be used to maintain a production nameserver.
METHODS
new
$packet = new Net::DNS::Update("foo.com");
$packet = new Net::DNS::Update("foo.com", "HS");Returns a Net::DNS::Packet object suitable for performing a DNS dynamic update. Specifically, it creates a packet with the header opcode set to UPDATE and the zone record type to SOA (per RFC 2136, Section 2.3).
Programs must use the push method to add RRs to the prerequisite, update, and additional sections before performing the update.
Arguments are the zone name and the class. If omitted, the class defaults to IN.
Future versions of Net::DNS may provide a simpler interface for making dynamic updates.
EXAMPLE
#!/usr/local/bin/perl -w
use Net::DNS;
$update = new Net::DNS::Update("bar.com");
# NXRRSET - Prerequisite is that no A records exist for the name.
$update->push("pre", new Net::DNS::RR(
Name => "foo.bar.com",
Class => "NONE",
Type => "A"));
# Add two A records for the name.
$update->push("update", new Net::DNS::RR(
Name => "foo.bar.com",
Ttl => 86400,
Type => "A",
Address => "192.168.1.1"));
$update->push("update", new Net::DNS::RR(
Name => "foo.bar.com",
Ttl => 86400,
Type => "A",
Address => "192.168.1.2"));
$res = new Net::DNS::Resolver;
$res->nameservers("primary-master.bar.com");
$ans = $res->send($update);
if (defined $ans) {
print $ans->header->rcode, "\n";
}
else {
print $res->errorstring, "\n";
}BUGS
This code is still under development and shouldn't be used to maintain a production nameserver.
COPYRIGHT
Copyright (c) 1997 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::Header, Net::DNS::Packet, Net::DNS::Question, Net::DNS::RR, RFC 2136