docs: def chexdump(x, dump=False):
      """Build a per byte hexadecimal representation
  
      Example:
          >>> chexdump(IP())
          0x45, 0x00, 0x00, 0x14, 0x00, 0x01, 0x00, 0x00, 0x40, 0x00, 0x7c, 0xe7, 0x7f, 0x00, 0x00, 0x01, 0x7f, 0x00, 0x00, 0x01  # noqa: E501
  
      :param x: a Packet
      :param dump: print the view if False
      :returns: a String only if dump=True
      """
      x = bytes_encode(x)
      s = ", ".join("%#04x" % orb(x) for x in x)
      if dump:
          return s
      else:
          print(s)