09-03-2019
shogun1970
Apart from showing us your attempts at this problem, could you also indicate if the order of records in the output file is important?
The problem description seems to indicate that a direct match record, when available, should be listed first and then other matches should be displayed in the same order as they appear in file1.txt.
However if the order of records in the output file is unimportant, the solution can be simplified a fair bit.
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LEARN ABOUT MOJAVE
net::dns::rr::l645.18
Net::DNS::RR::L64(3) User Contributed Perl Documentation Net::DNS::RR::L64(3)
NAME
Net::DNS::RR::L64 - DNS L64 resource record
SYNOPSIS
use Net::DNS;
$rr = new Net::DNS::RR('name IN L64 preference locator64');
$rr = new Net::DNS::RR(
name => 'example.com',
type => 'L64',
preference => 10,
locator64 => '2001:0DB8:1140:1000'
);
DESCRIPTION
Class for DNS 64-bit Locator (L64) resource records.
The L64 resource record is used to hold 64-bit Locator values for ILNPv6-capable nodes.
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.
preference
$preference = $rr->preference;
A 16 bit unsigned integer in network byte order that indicates the relative preference for this L64 record among other L64 records
associated with this owner name. Lower values are preferred over higher values.
locator64
$locator64 = $rr->locator64;
The Locator64 field is an unsigned 64-bit integer in network byte order that has the same syntax and semantics as a 64-bit IPv6 routing
prefix.
COPYRIGHT
Copyright (c)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, RFC6742
perl v5.18.2 2014-01-16 Net::DNS::RR::L64(3)