docs: static InetAddress[] getGlobalInterfaces() throws SocketException {
          List<InetAddress> list = new ArrayList<InetAddress> ();
          for (NetworkInterface intf : getInterfaces()) {
              if (intf.isUp()) {
                  for (InetAddress address : Collections.list(intf.getInetAddresses())) {
                      if (address.isLoopbackAddress() == false &&
                              address.isSiteLocalAddress() == false &&
                              address.isLinkLocalAddress() == false) {
                          list.add(address);
                      }
                  }
              }
          }
          return list.toArray(new InetAddress[list.size()]);
      }