Actually, I got it - I changed it to this 
    if ($old_ip) {
        print "here old ip $old_ip, hostname $hostname, new ip $new_ip
+ \n";
        $ref_data->{$old_ip}{"hostname"} = $hostname;
        $ref_data->{$old_ip}{"new_ip"} = $new_ip;
    }

[download]
which works now. I knew it was something trivial. :)

-- Burvil

In reply to Re^2: Hash reference undefined somewhere? by bowei_99
in thread Hash reference undefined somewhere? by bowei_99

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