// then it will return default IPv4 and IPv6 cidr mask sizes.
func setNodeCIDRMaskSizes(cfg nodeipamconfig.NodeIPAMControllerConfiguration, clusterCIDRs []*net.IPNet) ([]int, error) {

	sortedSizes := func(maskSizeIPv4, maskSizeIPv6 int) []int {
		nodeMaskCIDRs := make([]int, len(clusterCIDRs))

		for idx, clusterCIDR := range clusterCIDRs {
			if netutils.IsIPv6CIDR(clusterCIDR) {

			files[name] = fakeFile{name, fi}
		}
	}
	sortedFiles := diskfis[:0]
	for _, f := range files {
		sortedFiles = append(sortedFiles, f)
	}
	sort.Slice(sortedFiles, func(i, j int) bool { return sortedFiles[i].Name() < sortedFiles[j].Name() })
	return sortedFiles, nil
}

// OverlayPath returns the path to the overlaid contents of the