code: def anonymize_ip(
      address,
      ipv4_mask=u"255.255.255.0",
      ipv6_mask=u"ffff:ffff:ffff:0000:0000:0000:0000:0000"
  ):
      
  
      # IP address to be anonymized
      address_packed = ip_address(six.text_type(address)).packed
      address_len = len(address_packed)
  
      if address_len == 4:
          # IPv4
          ipv4_mask_packed = ip_address(ipv4_mask).packed
          __validate_ipv4_mask(ipv4_mask_packed)
          return __apply_mask(address_packed, ipv4_mask_packed, 4)
      elif address_len == 16:
          # IPv6
          ipv6_mask_packed = ip_address(ipv6_mask).packed
          __validate_ipv6_mask(ipv6_mask_packed)
          return __apply_mask(address_packed, ipv6_mask_packed, 16)
      else:
          # Invalid address
          raise ValueError("Address does not consist of 4 (IPv4) or 16 (IPv6) "
                           "octets")
docs: Anonymize the provided IPv4 or IPv6 address by setting parts of the
      address to 0
      :param str|int address: IP address to be anonymized
      :param str ipv4_mask: Mask that defines which parts of an IPv4 address are
      set to 0 (default: "255.255.255.0")
      :param str ipv6_mask: Mask that defines which parts of an IPv6 address are
      set to 0 (default: "ffff:ffff:ffff:0000:0000:0000:0000:0000")
      :return: Anonymized IP address
      :rtype: str