Are you just trying to do this? 

$mactobp{ $_ } = $bptoifIndex{ $mactobp{ $_ } } for keys %mactobp;

[download]

Or, maybe a bit more robustly: 

for my $key (keys %mactobp) { 
    if (exists $bptoifIndex{ $mactobp{ $key } }) { 
        $mactobp{ $key } = $bptoifIndex{ $mactobp{ $key } };
    } 
}

[download]

-sauoq
"My two cents aren't worth a dime.";

In reply to Re: Merging 2 hashes by sauoq
in thread Merging 2 hashes - updated again by rspence

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