code: def parse_ipv4(address):
      
      raw = struct.pack('I', address)
      octets = struct.unpack('BBBB', raw)[::-1]
      ipv4 = b'.'.join([('%d' % o).encode('ascii') for o in bytearray(octets)])
      return ipv4
docs: Given a raw IPv4 address (i.e. as an unsigned integer), return it in
      dotted quad notation.