#!/usr/bin/perl

use warnings;
use strict;

my $tmpipaccountingfile	= "tmpipaccountingfile";
my $DestDevice = "Box";

my %data;

open my $TMPIPACCOUNTINGFILE, "<", "$tmpipaccountingfile" or die "$!";
while (<$TMPIPACCOUNTINGFILE>) {
    next if (/^(?:$|sh|\s*Source|^$DestDevice|Accounting)/);
    my @fields = split;
    push @{ $data{$fields[1]} }, [ @fields[0,2,3] ];
}
close $TMPIPACCOUNTINGFILE;

while (<DATA>) {
    print;
    chomp;
    for my $match (@{ $data{$_} }) {
        print join "\t", $match->[0], $_, @{$match}[1,2];
        print "\n";
    }
}

__DATA__
10.2.9.2
10.2.9.3
10.2.9.6