An issue in Open Network Foundation ONOS v2.7.0 allows attackers to create fake IP/MAC addresses and potentially execute a man-in-the-middle attack on communications between fake and real hosts.
https://wiki.onosproject.org/pages/viewpage.action?pageId=16122675
https://gist.github.com/kjw6855/9764e3f51b89119473e4d2c4f64dca27