derby is right, in that you normally wouldn't want to hard-code the termination value of a loop that iterates over an array (i.e., use $#ips rather than 15).

Also, be aware that the C idiom:

for ($x = 0; $x < @ips; $x++) {

or:

for ($x = 0; $x <= $#ips; $x++) {

is frequently coded in Perl as this:

for my $x (0..$#ips) {

in cases where the loop index, $x is needed within the loop. Otherwise, when it isn't really necessary (as in your case), you'll frequently see derby's suggestion used or perhaps this variation which avoids use of the implicit $_:

for my $ip (@ips) {
  push @newips, $ip->[0];
  push @attempts, $ip->[1];
}
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dmm

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