o summarize openFlow $1\mathrm{.}2$ additions what I have understood is that it is making the process of sorting the data packets faster by flexible sorting tags with special instructions of handling and sorting and not just the source and destination address is used for sorting this makes the delivery system more sophisticated and efficient we can also rewrite the header field by adding special instructions and not just changing source and destination address giving more information to the controller why the data packet came to the controller for processing with additional information about the nature of the data packet and the circumstance the controller can take better decisions of what to do with the data packet multiple controllers ensure that there is no single point of connection failure with the switch multiple controller role one master with decision making and behaviour altering power and others are slave can help master by taking statistics from switch but cannot make decisions and equal can set switch configuration? have I understood it correctly?