... from the mailing list:
and//You can verify that OVS supports deletion by cookie specification by checking these tests: 932: ofproto.at:1746 ofproto - del flows based on cookie 933: ofproto.at:1767 ofproto - del flows based on cookie mask // Run the tests using “make check” like this: sudo make check TESTSUITEFLAGS='932-933' -C _gcc //Look at what is being tested here: tests/ofproto.at
Maybe you want to check what Ryu is sending the switch http://www.openvswitch.org//support/dist-docs/ovs-ofctl.8.pdf “OpenFlow Switch Monitoring Commands: monitor switch [miss-len] [invalid_ttl] [watch:[spec...]] Connects to switch and prints to the console all OpenFlow messages received. Usually, switch should specify the name of a bridge in the ovs−vswitchd database.“ eg) ovs-ofctl monitor br0 65534 invalid_ttl --detach --no-chdir --pidfile 2> ofctl_monitor.log