You need to take the difference of the 2 arrays first, using something like Acme::Tools::minus: 
use warnings;
use strict;
use Acme::Tools qw(minus);

my $tmpdata  = "tmpdata";
my $DestDevice = "Box";

my %data;

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

my @ip1 = keys %data;
my @ip2 = <DATA>;
chomp @ip2;

my @nomatches = minus(\@ip1, \@ip2);
for (@nomatches) {
    for my $match (@{ $data{$_} }) {
        my @Results =  join "\t", $match->[0], $_, @{$match}[1,2];
        print @Results, "\n";
    }
}

exit;

__DATA__
10.2.9.2
10.2.9.3
10.2.9.6

[download]
prints: 
209.68.19.130   10.2.9.4        33      15941
67.148.147.65   10.2.9.5        57      39207

[download]

In reply to Re: Trying to get the complete opposite end results by toolic
in thread Trying to get the complete opposite end results by mlebel

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