var hostMac string
	if isOverlay(hnsNetworkInfo) {
		if !utilfeature.DefaultFeatureGate.Enabled(kubefeatures.WinOverlay) {
			return nil, fmt.Errorf("WinOverlay feature gate not enabled")
		}
		err = hcn.RemoteSubnetSupported()
		if err != nil {
			return nil, err
		}
		sourceVip = config.SourceVip
		if len(sourceVip) == 0 {
			return nil, fmt.Errorf("source-vip flag not set")
		}

		if nodeIP.IsUnspecified() {