What you are doing here is spliting on ".." not "."

My Solution is:

$ipaddr = "192.168.8.205";
@ip = split /\./,$ipaddr; # Split on 2nd .
$iprefix =$ip[0] . "." . $ip[1];
print($iprefix);
[download]

There may be a better way, but its 5am, I had 3 hours sleep so I went with what I knew would work :)

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I admit it, I am Paco.