svcSubnet:   "fd03::/112,",
			expectedErr: true,
		},
	}
	for _, rt := range tests {
		t.Run(rt.name, func(t *testing.T) {
			virtualIP, err := GetAPIServerVirtualIP(rt.svcSubnet)
			if (err != nil) != rt.expectedErr {
				t.Errorf("failed APIServerVirtualIP:\n\texpectedErr: %v, got: %v", rt.expectedErr, err)
			} else if !rt.expectedErr {

	}
	if len(svcSubnets) == 0 {
		return nil, errors.New("received empty ServiceSubnet")
	}
	return svcSubnets[0], nil
}

// GetAPIServerVirtualIP returns the IP of the internal Kubernetes API service
func GetAPIServerVirtualIP(svcSubnetList string) (net.IP, error) {
	svcSubnet, err := GetKubernetesServiceCIDR(svcSubnetList)
	if err != nil {

			cfg.LocalAPIEndpoint.AdvertiseAddress)
	}

	internalAPIServerVirtualIP, err := kubeadmconstants.GetAPIServerVirtualIP(cfg.Networking.ServiceSubnet)
	if err != nil {
		return nil, errors.Wrapf(err, "unable to get first IP address from the given CIDR: %v", cfg.Networking.ServiceSubnet)
	}