code: func MaxPacketSize(n int) Option {
  	return Option(func(c *config) {
  		c.Conn.MaxPacketSize = n
  	})
  }
docs: // MaxPacketSize sets the maximum packet size in bytes sent by the Client.
  //
  // By default, it is 1440 to avoid IP fragmentation. This option is ignored in
  // Client.Clone().