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v89	v90
81	81	=== 2c. Point your switch to a controller ===
82	82
83		Find the control interface IP of your controller, use ifconfig and note down the IP of `eth0`. (Controller window)
	83	In the controller window, find the control interface IP of your controller, use ifconfig and note down the IP of `eth0`.
84	84
85	85	An !OpenFlow switch will not forward any packet, unless instructed by a controller. Basically the forwarding table is empty, until an external controller inserts forwarding rules. The !OpenFlow controller communicates with the switch over the control network and it can be anywhere in the Internet as long as it is reachable by the OVS host. For the purpose of this tutorial and in order to minimize the resources we have reserved we are going to run !OpenFlow controller at the same host as the OVS switch. This is '''merely''' for convenience reasons, the controller could have been anywhere on the Internet.