code: public static Predicate<InetAddress> ofExact(String address) {
          requireNonNull(address, "address");
          try {
              final InetAddress inetAddress = InetAddress.getByName(address);
              return ofExact(inetAddress);
          } catch (UnknownHostException e) {
              throw new IllegalArgumentException("Invalid address: " + address, e);
          }
      }
docs: Returns a {@link Predicate} which returns {@code true} if the given {@link InetAddress} equals to
  the specified {@code address}.
  
  @param address the expected IP address string, e.g. {@code 10.0.0.1}