It has been more than two years since the Linux kernel cgroups v2 API was declared stable. With some distributions now defaulting to this API, Kubernetes must support it to continue operating on those distributions. cgroups v2 offers several improvements over cgroups v1, for more information see the [cgroups v2](https://kubernetes.io/docs/concepts/architecture/cgroups/) documentation. While cgroups v1 will continue to be supported, this enhancement puts Kubernetes to be ready for eventual deprecation...

		* Fixed the output of kubectl taint node command with minor improvements. ([#43171](https://github.com/kubernetes/kubernetes/pull/43171), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla))


### **Networking**
#### Network Policy

        continue;
      }
      int alphaIndex = getAlphaIndex(c1);
      // This was also benchmarked using '&' to avoid branching (but always evaluate the rhs),
      // however this showed no obvious improvement.
      if (alphaIndex < 26 && alphaIndex == getAlphaIndex(c2)) {
        continue;
      }
      return false;
    }
    return true;
  }

  /**

In Kubernetes 1.19 this feature will be enabled by default with kube-proxy reading from EndpointSlices instead of Endpoints. Although this will mostly be an invisible change, it should result in noticeable scalability improvements in large clusters. It will also enable significant new features in future Kubernetes releases like Topology Aware Routing.

### Ingress graduates to General Availability

- Performance testing infrastructure

## Success Metrics

1. **Functional Completeness**: All features pass Windows Protocol Test Suite
2. **Performance**: 
   - Multi-channel provides >1.5x throughput improvement
   - RDMA reduces latency by >50%
3. **Reliability**: 
   - Persistent handles survive 99% of network interruptions
   - Witness protocol achieves <5 second failover time

    // Measure multi-channel throughput
    long multiChannelTime = measureReadTime(file, true);
    
    // Multi-channel should be faster
    assertTrue(multiChannelTime < singleChannelTime * 0.7);  // At least 30% improvement
}
```

## 8. Performance Metrics

### 8.1 Channel Statistics
```java
public class MultiChannelStatistics {
    private final Map<String, ChannelStatistics> channelStats;
    

- Modified the error message of `unmanagedFatal` to enhance clarity while preserving grammatical consistency with `unmanagedWarning`. This improvement ensures a more understandable prompt for users. ([#120159](https://github.com/kubernetes/kubernetes/pull/120159), [@Ithrael](https://github.com/Ithrael))

### Failing Test