Hi folks Security group for OVS agent (ovs plugin or ML2) is being broken. so we need vif_security port binding to fix this (https://review.openstack.org/#/c/21946/) We got discussed about the architecture for ML2 on ML2 weekly meetings, and I wanna continue discussion in here. Here is my proposal for how to fix it. https://docs.google.com/presentation/d/1ktF7NOFY_0cBAhfqE4XjxVG9yyl88RU_w9JcNiOukzI/edit#slide=id.p Best Nachi