- Azure Cloud Provider now supports using Azure network resources (Virtual Network, Load Balancer, Public IP, Route Table, Network Security Group, etc.) in different AAD Tenant and Subscription than those for the Kubernetes cluster. To use the feature, please reference https://kubernetes-sigs.github.io/cloud-provider-azure/install/configs/#host-network-resources-in-different-aad-tenant-and-subscription. ([#88384](https://github.com/kubernetes/kubernetes/pull/88384),...

### Bug or Regression

- An inefficient lock in EndpointSlice controller metrics cache has been reworked. Network programming latency may be significantly reduced in certain scenarios, especially in clusters with a large number of Services. ([#107169](https://github.com/kubernetes/kubernetes/pull/107169), [@robscott](https://github.com/robscott)) [SIG Apps and Network]

- Fix Windows kube-proxy to prevent intermittent deletion of ClusterIP load balancers in HNS when internalTrafficPolicy=Local, ensuring stable service connectivity. ([#134032](https://github.com/kubernetes/kubernetes/pull/134032), [@princepereira](https://github.com/princepereira)) [SIG Network and Windows]

- Fix Windows kube-proxy to prevent intermittent deletion of ClusterIP load balancers in HNS when internalTrafficPolicy=Local, ensuring stable service connectivity. ([#134031](https://github.com/kubernetes/kubernetes/pull/134031), [@princepereira](https://github.com/princepereira)) [SIG Network and Windows]

- Introduced a structured and versioned `v1alpha1` response format for the `flagz` endpoint. ([#134995](https://github.com/kubernetes/kubernetes/pull/134995), [@yongruilin](https://github.com/yongruilin)) [SIG API Machinery, Architecture, Instrumentation, Network, Node, Scheduling and Testing]

- EndpointSlice controllers are less likely to create duplicate EndpointSlices. ([#101763](https://github.com/kubernetes/kubernetes/pull/101763), [@aojea](https://github.com/aojea)) [SIG Apps and Network]

### Promoted endPort in Network Policy to Stable

Promoted `endPort` in [Network Policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/#targeting-a-range-of-ports) to GA. Network Policy providers that support `endPort` field now can use it to specify a range of ports to apply a Network Policy. Previously, each Network Policy could only target a single port.

- Fixing issue with Winkernel Proxier - ClusterIP Loadbalancers are missing if the ExternalTrafficPolicy is set to Local and the available endpoints are all remoteEndpoints. ([#115919](https://github.com/kubernetes/kubernetes/pull/115919), [@princepereira](https://github.com/princepereira)) [SIG Network and Windows]

- Fixes a problem with 63-second or 1-second connection delays with some VXLAN-based
  network plugins which was first widely noticed in 1.16 (though some users saw it
  earlier than that, possibly only with specific network plugins). If you were previously
  using ethtool to disable checksum offload on your primary network interface, you should

- Fix Windows kube-proxy to prevent intermittent deletion of ClusterIP load balancers in HNS when internalTrafficPolicy=Local, ensuring stable service connectivity. ([#134033](https://github.com/kubernetes/kubernetes/pull/134033), [@princepereira](https://github.com/princepereira)) [SIG Network and Windows]