Internet2 tried to connect two universities (attaching to the network through BGP routers) to the same OF switch.
This didn't work. It doesn't seem supported by the current ONOS/SDN-IP version.
It would be important to solve this as soon as possible, in order to allow all the universities to correctly connect to the testbed.
Include this behavior in Cardinal is fundamental, since it will be the next version that will be deployed. It would be nice anyway to correct this behavior also in Avocet, since it's the version currently used in the deployment.