// The port number of the endpoint.
  optional int32 port = 2;

  // The IP protocol for this port.
  // Must be UDP, TCP, or SCTP.
  // Default is TCP.
  // +optional
  optional string protocol = 3;

  // The application protocol for this port.
  // This is used as a hint for implementations to offer richer behavior for protocols that they understand.
  // This field follows standard Kubernetes label syntax.

- To ensure the code be strong,  add unit test for GetAddressAndDialer ([#93180](https://github.com/kubernetes/kubernetes/pull/93180), [@FreeZhang61](https://github.com/FreeZhang61)) [SIG Node]
- UDP and SCTP protocols can left stale connections that need to be cleared to avoid services disruption, but they can cause problems that are hard to debug.

- Delete deprecated `service.beta.kubernetes.io/azure-load-balancer-mixed-protocols` mixed procotol annotation in favor of the MixedProtocolLBService feature ([#97096](https://github.com/kubernetes/kubernetes/pull/97096), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]

- Kube-apiserver: multiple comma-separated protocols in a single X-Stream-Protocol-Version header are now recognized, in addition to multiple headers, complying with RFC2616 ([#89857](https://github.com/kubernetes/kubernetes/pull/89857), [@tedyu](https://github.com/tedyu)) [SIG API Machinery]

    /** The key of the configuration. e.g. http,https */
    String CRAWLER_WEB_PROTOCOLS = "crawler.web.protocols";

    /** The key of the configuration. e.g. file,smb,smb1,ftp,storage */
    String CRAWLER_FILE_PROTOCOLS = "crawler.file.protocols";

    /** The key of the configuration. e.g. ^FESS_ENV_.* */
    String CRAWLER_DATA_ENV_PARAM_KEY_PATTERN = "crawler.data.env.param.key.pattern";

- AWS ELB health checks will now use HTTPS/SSL protocol for HTTPS/SSL backends. ([#70309](https://github.com/kubernetes/kubernetes/pull/70309), [@2rs2ts](https://github.com/2rs2ts))

### Azure

* fix parse devicePath issue on Azure Disk ([#74499](https://github.com/kubernetes/kubernetes/pull/74499), [@andyzhangx](https://github.com/andyzhangx))
* fix mixed protocol issue for azure load balancer ([#74200](https://github.com/kubernetes/kubernetes/pull/74200), [@andyzhangx](https://github.com/andyzhangx))

- Fixes high CPU usage in kubectl drain ([#95260](https://github.com/kubernetes/kubernetes/pull/95260), [@amandahla](https://github.com/amandahla)) [SIG CLI]
- Kube-apiserver: multiple comma-separated protocols in a single X-Stream-Protocol-Version header are now recognized, in addition to multiple headers, complying with RFC2616 ([#89857](https://github.com/kubernetes/kubernetes/pull/89857), [@tedyu](https://github.com/tedyu)) [SIG API Machinery]

*   Load balancer reconciliation now considers NSG rules based not only on Name, but also on Protocol, SourcePortRange, DestinationPortRange, SourceAddressPrefix, DestinationAddressPrefix, Access, and Direction. This change makes it possible to update NSG rules under more conditions.  ([#55752](https://github.com/kubernetes/kubernetes/pull/55752),[...

### API Change

- A CDIDevice field is included in the Device Plugin's `ContainerAllocateResponse`. This field maps to the CDIDevice field in the CRI protocol. ([#118254](https://github.com/kubernetes/kubernetes/pull/118254), [@elezar](https://github.com/elezar)) [SIG Node and Testing]
- ACTION_REQUIRED