ipFamilyMap := map[v1.IPFamily][]*net.IPNet{}
	for _, cidrStrUntrimmed := range cidrsStrings {
		cidrStr := strings.TrimSpace(cidrStrUntrimmed)
		_, cidr, err := netutils.ParseCIDRSloppy(cidrStr)
		if err != nil {
			// Ignore empty strings. Same as in MapIPsByIPFamily
			if len(cidrStr) != 0 {
				klog.ErrorS(err, "Invalid CIDR ignored", "CIDR", cidrStr)
			}
			continue
		}

			cidrMap := MapCIDRsByIPFamily(testcase.ipString)

			var cidrStr []string
			for _, cidr := range cidrMap[ipFamily] {
				cidrStr = append(cidrStr, cidr.String())
			}
			var cidrStrOther []string
			for _, cidr := range cidrMap[otherIPFamily] {
				cidrStrOther = append(cidrStrOther, cidr.String())
			}

			if !reflect.DeepEqual(testcase.expectCorrect, cidrStr) {

	// after each one.
	clusterCIDRStr := "10.42.0.0/16"
	operations := []struct {
		cidrStr     string
		operation   string
		numOccupied int
	}{
		// Occupy 1 element: +1
		{
			cidrStr:     "10.42.5.0/24",
			operation:   "occupy",
			numOccupied: 1,
		},
		// Occupy 1 more element: +1
		{
			cidrStr:     "10.42.9.0/24",
			operation:   "occupy",
			numOccupied: 2,
		},

}
func makeIPs(ipStr ...string) []net.IP {
	var ips []net.IP
	for _, s := range ipStr {
		ips = append(ips, netutils.ParseIPSloppy(s))
	}
	return ips
}
func mustMakeCIDRs(cidrStr ...string) []*net.IPNet {
	var cidrs []*net.IPNet
	for _, s := range cidrStr {
		if _, n, err := netutils.ParseCIDRSloppy(s); err == nil {
			cidrs = append(cidrs, n)
		} else {
			panic(err)
		}
	}
	return cidrs
}

				if netutil.IsValidIPAddress(address) {
					hostAddresses = append(hostAddresses, &HostAddress{hostname, address})
				} else if cidr, cidrErr := netip.ParsePrefix(address); cidrErr == nil {
					newAddress := address
					if cidr.Bits() == cidr.Addr().BitLen() {
						// /32 mask. Remove the /32 and make it a normal IP address
						newAddress = cidr.Addr().String()
					}