And the other thing that might be what you want is:

ABC: while ()
{
   #print "entered into while loop\n";
   if ($_ eq $net_extract) 
   {
      $count = 1;
      print "hello\n";
   }
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These are 2 quite different approaches though, kvale's will execute the loop if any part of $_ matches $net_extract, whereas the in the code above the loop will only execute if $_ and $net_extract match exactly.

"Nothing is sure but death and taxes" I say combine the two and its death to all taxes!