On March 31, 2028, kubenet networking for Azure Kubernetes Service (AKS) will be retired.
To avoid service disruptions, you'll need to follow these instructions to upgrade to Azure Container Networking Interface (CNI) overlay before that date, when workloads running on kubenet for AKS will no longer be supported.
Azure CNI overlay provides the same IP address overlay architecture as kubenet, plus new capabilities for increased scalability. We encourage you to migrate to Azure CNI overlay prior to the retirement date to take advantage of the added benefits.