code: func addIntToIP(array []byte, ordinal uint64) {
  	for i := len(array) - 1; i >= 0; i-- {
  		array[i] |= (byte)(ordinal & 0xff)
  		ordinal >>= 8
  	}
  }
docs: // Adds the ordinal IP to the current array
  // 192.168.0.0 + 53 => 192.168.0.53