// We're hitting 255 machines in parallel :)
// Returns list of found aware machines
static L<S> empBlast() {
  L<S> l = synchroList();
  new L<Thread> threads;
  S ip = getMyIP();
  int i = ip.lastIndexOf('.');
  if (i < 0) ret;
  S net = substring(ip, 0, i+1);
  L<S> myIPs = myIPs();
  print("EMP-BLASTING" + net + ".*");
  for (int n = 1; n <= 255; n++) {
    fS peer = net + n;
    if (!myIPs.contains(peer)) {
      S msg = "Peer Scan " + peer;
      threads.add(startThread(msg, r {
        if (isAware(peer)) l.add(peer);
      }));
    }
  }
  waitForThreads(threads);
  ret l;
}