How Can I reset the internal pointer of a while loop back to the first element in the list? I'm trying to use a redo from a for loop to another for loop which has a while loop in between them, but the internal pointer of the while loop remains the same instead of starting at the beginning element again. udpate: code follows 
MASK: while (my($defNet,$defKey) = each (%defMaskArray)){
    print OUT "Starting new Subnet - $defNet\n";
    $boundary = $defKey; # set boundary to key by default and allow fo
+r it to be modified
    print OUT "Working:  $defNet maskKey $boundary for $subCount{$defN
+et} hosts\n";
    my $refHandle = $subArray{$defNet}; # create a hash reference for 
+the subnet subHash
    my $hostsN = $subCount{$defNet}; # get number of hosts from subCou
+nt hash
    HOST:  for ($b = 1; $b <= $hostsN; $b++){ # track number of hosts 
+in Subnet so we know when to stop
        print OUT "Current iteration is $b\n";
        NET:  while (my($n, $host) = each %$refHandle){ # loop through
+ hosts in subnet subhash
            print OUT "| Subnet:  ".$defNet."| Original Mask:  $defKey
+"."| Current Mask:  ".$boundary."| IP:  ".$host."| host #:  $b"."\n";
            TEST:  for ($i = 0; $i <= 256; $i = ($i + $boundary)){ # e
+valuate boundaries
                if ($i == $host || (($i + $boundary) - 1) == $host){
                    print OUT "$defNet for $host fell on a boundary fo
+r mask - $boundary\n";
                    if ($boundary == 256){
                        print OUT "Current Sub: $defNet Mask: 256\n";
                        push (@routeArray, $defNet."/24")
                    }
                    else{
                        $boundary = ($boundary * 2);
                        print OUT "test for $host failed - retrying wi
+th $boundary after $b hosts attempted - original was $defKey\n";
                        $i = 0;
                        redo HOST;
                    }
                }
                elsif ($i > $host){
                    print OUT "$i is Greater then $host, no need to te
+st further. Value of B is $b. Next Host.\n";
                    next HOST;
                }
                else{
                    print OUT "Host $host passed for $i - this is host
+ # $b with a default of $defKey\n";
                }
            }
        }
        print OUT "# of Hosts:  ".$b." Original Mask:  ".$defKey." New
+ Mask:  ".$boundary."\n";
        print OUT "#################################################\n
+";
        $trueMaskArray{$defNet} = $boundary;
    }
}

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In reply to Resetting Internal Loop Pointers by ddanatzko

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