* Stop 'kubectl drain' deleting pods with local storage. ([#26667](https://github.com/kubernetes/kubernetes/pull/26667), [@mml](https://github.com/mml))
* Networking e2es: Wait for all nodes to be schedulable in kubeproxy and networking tests ([#27008](https://github.com/kubernetes/kubernetes/pull/27008), [@zmerlynn](https://github.com/zmerlynn))

		return false
	}

	if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.WinOverlay) && isOverlay(networkInfo) {
		// Overlay (VXLAN) networks on Windows do not support dual-stack networking today
		klog.InfoS("Winoverlay does not support dual-stack, falling back to single-stack")
		return false
	}

	return true
}

// internal struct for endpoints information
type endpointInfo struct {

// the first 1MB of data, then use larger records for subsequent data, and
// reset back to smaller records after the connection becomes idle. See "High
// Performance Web Networking", Chapter 4, or:
// https://www.igvita.com/2013/10/24/optimizing-tls-record-size-and-buffering-latency/
//
// In the interests of simplicity and determinism, this code does not attempt

			return nil, err
		}
	}

	// Be conservative in what you do, be liberal in what you accept from others.
	// If it's non-zero, we mark only out of window RST segments as INVALID.
	// Ref: https://docs.kernel.org/networking/nf_conntrack-sysctl.html
	conntrackTCPLiberal := false
	if val, err := sysctl.GetSysctl(sysctlNFConntrackTCPBeLiberal); err == nil && val != 0 {
		conntrackTCPLiberal = true

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/util/intstr"

	"istio.io/api/annotation"
	"istio.io/api/label"
	meshconfig "istio.io/api/mesh/v1alpha1"
	"istio.io/client-go/pkg/apis/networking/v1alpha3"
	"istio.io/istio/pilot/pkg/features"
	"istio.io/istio/pilot/pkg/model"
	"istio.io/istio/pilot/pkg/serviceregistry/kube"
	"istio.io/istio/pilot/pkg/serviceregistry/provider"