Container Network Interface (CNI) allows us to plug in a third-party networking driver. Kops supports Calico, flannel, Canal (Flannel + Calico), kopeio-vxlan, kube-router, romana, weave, and amazon-vpc-routed-eni networks. Each of those networks comes with pros and cons and differs in its implementation and primary objectives. Choosing between them would require a detailed analysis of each. We’ll leave a comparison of all those for some other time and place. Instead, we’ll focus on kubenet.