Consider the SDN OnenFlow network as shown below. Suppose that the desired forwarding behavior for datagrams arriving at 3 is as follows: - any datagrams arriving on input port 4 from hosts h3 or h4 that are destined to hosts h1 or h2 should be forwarded over output port 3 - any datagrams arriving on input port 3 from hosts h1 or h2 that are destined to hosts h3 or h4 should be forwarded over output port 4 - any arriving datagrams on input ports 3 or 4 and destined to hosts h5 or h6 should be delivered to the host specified - hosts h5 and h6 should be able to send datagrams to each other Specify the flow table entries in s3 that implement this forwarding behavior. [4 marks]