using mininet 2.1.0+ and OVS 2.1.0
I have set up a GRE tunnel between two virtual machines. VM1=192.168.56.103 and VM2 = 192.168.56.101. The tunnel works correctly; i can ping the inner addresses from one side to the other. I can see that the GRE header is correct in wireshark. i can see that when the ICMP packet comes out of the tunnel on VM2, the switch is using reactive forwarding (PACKET_IN, PACKET_OUT to Floodlight controller) to get the packet to its destination host. I would like to add a flow rule to the switch on VM2 so that reactive forwarding is not used by the VM2 switch. I have tried many versions of the following flow rule in VM2: sudo ovs-ofctl -O OpenFlow13 add-flow s2 cookie=5,ip,tun_dst=192.168.56.101/24,idle_timeout=90,actions=output:flood i have tried matching on tun_id, tun_src, tun_dst but the incoming ICMP is never taking my flow rule. Is it possible to match on a packet coming GRE packet? What would i match on in the flow rule? Thanks, Rod Melton
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