Net::DNS::RR::SOA(3) User Contributed Perl Documentation Net::DNS::RR::SOA(3)NAMENet::DNS::RR::SOA - DNS SOA resource record
SYNOPSIS
use Net::DNS;
$rr = new Net::DNS::RR('name SOA mname rname 0 86400 3600 604800 10800');
DESCRIPTION
Class for DNS Start of Authority (SOA) resource records.
METHODS
The available methods are those inherited from the base class augmented
by the type-specific methods defined in this package.
Use of undocumented package features or direct access to internal data
structures is discouraged and could result in program termination or
other unpredictable behaviour.
mname
$mname = $rr->mname;
The domain name of the name server that was the original or primary
source of data for this zone.
rname
$rname = $rr->rname;
The mailbox which identifies the person responsible for maintaining
this zone.
serial
$serial = $rr->serial;
$serial = $rr->serial(value);
Unsigned 32 bit version number of the original copy of the zone. Zone
transfers preserve this value.
RFC1982 defines a strict (irreflexive) partial ordering for zone serial
numbers. The serial number will be incremented unless the replacement
value argument satisfies the ordering constraint.
refresh
$refresh = $rr->refresh;
A 32 bit time interval before the zone should be refreshed.
retry
$retry = $rr->retry;
A 32 bit time interval that should elapse before a failed refresh
should be retried.
expire
$expire = $rr->expire;
A 32 bit time value that specifies the upper limit on the time interval
that can elapse before the zone is no longer authoritative.
minimum
$minimum = $rr->minimum;
The unsigned 32 bit minimum TTL field that should be exported with any
RR from this zone.
Zone Serial Number Management
The internal logic of the serial() method offers support for several
widely used zone serial numbering policies.
Strictly Sequential
$successor = $soa->serial( SEQUENTIAL );
The existing serial number is incremented modulo 2**32 because the
value returned by the auxiliary SEQUENTIAL() function can never satisfy
the serial number ordering constraint.
Date Encoded
$successor = $soa->serial( YYYYMMDDxx );
The 32 bit value returned by the auxiliary YYYYMMDDxx() function will
be used if it satisfies the ordering constraint, otherwise the serial
number will be incremented as above.
Serial number increments must be limited to 100 per day for the date
information to remain useful.
Time Encoded
$successor = $soa->serial( UNIXTIME );
The 32 bit value returned by the auxiliary UNIXTIME() function will
used if it satisfies the ordering constraint, otherwise the existing
serial number will be incremented as above.
COPYRIGHT
Copyright (c)1997-2002 Michael Fuhr.
Portions Copyright (c)2002-2004 Chris Reinhardt.
Portions Copyright (c)2010,2012 Dick Franks.
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
All rights reserved.
This program is free software; you may redistribute it and/or modify it
under the same terms as Perl itself.
SEE ALSO
perl, Net::DNS, Net::DNS::RR, RFC1035 Section 3.3.13, RFC1982
perl v5.18.1 2012-12-28 Net::DNS::RR::SOA(3)
