rjsaulakh,
After spending a fair amount of time trying to explain this to you in the CB, I am going to recap before answering your question.

A hash key ($nas) is nothing more than a key and it has a corresponding value in the hash. That value may be a reference to another data structure (an anonymous hash). That anonymous hash may have one or more keys ($response_status). Your confusion is in thinking that there is only one possible value in the anonymous hash. In reality, it may have one or more keys. I would suggest the following code instead: 

#!/usr/bin/perl
use strict;
use warnings;

use constant STATUS  => 0;
use constant REQUEST => 1;

# Some code that initializes %list
# In the form
# $list{ $nas }[STATUS]  = $response_status;
# $list{ $nas }[REQUEST] = $request_date_time

# Later on you can retrieve the status and request like

my $mac = ''; # actual code to get MAC from log
my $status  = $list{ $mac }[STATUS];
my $request = $list{ $mac }[REQUEST];

[download]
You may need to modify it a little if it is possible for a MAC to have more than one status and request date. If that is the case then you need to take some time in figuring out how to ask a question.

List of links added after initial post

Cheers - L~R

In reply to Re: How do I load a hash table? by Limbic~Region
in thread How do I load a hash table? by rjsaulakh

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