func NewNodePortAddresses(family v1.IPFamily, cidrStrings []string) *NodePortAddresses {
	npa := &NodePortAddresses{}

	// Filter CIDRs to correct family
	for _, str := range cidrStrings {
		if (family == v1.IPv4Protocol) == netutils.IsIPv4CIDRString(str) {
			npa.cidrStrings = append(npa.cidrStrings, str)
		}
	}
	if len(npa.cidrStrings) == 0 {
		if family == v1.IPv4Protocol {
			npa.cidrStrings = []string{IPv4ZeroCIDR}
		} else {

		}
	}
	return ipFamilyMap
}

// MapCIDRsByIPFamily maps a slice of CIDRs to their respective IP families (v4 or v6)
func MapCIDRsByIPFamily(cidrsStrings []string) map[v1.IPFamily][]*net.IPNet {
	ipFamilyMap := map[v1.IPFamily][]*net.IPNet{}
	for _, cidrStrUntrimmed := range cidrsStrings {
		cidrStr := strings.TrimSpace(cidrStrUntrimmed)
		_, cidr, err := netutils.ParseCIDRSloppy(cidrStr)
		if err != nil {