func (npa *NodePortAddresses) MatchAll() bool {
	return npa.matchAll
}

// GetNodeIPs return all matched node IP addresses for npa's CIDRs. If no matching
// IPs are found, it returns an empty list.
// NetworkInterfacer is injected for test purpose.
func (npa *NodePortAddresses) GetNodeIPs(nw NetworkInterfacer) ([]net.IP, error) {
	addrs, err := nw.InterfaceAddrs()
	if err != nil {

					t.Errorf("unexpected MatchAll(%s), expected: %v", family, tc.expected[family].matchAll)
				}

				ips, err := npa.GetNodeIPs(nw)
				expectedIPs := tc.expected[family].ips

				// The fake InterfaceAddrs() never returns an error, so
				// the only error GetNodeIPs will return is "no
				// addresses found".
				if err != nil {
					t.Errorf("unexpected error: %v", err)
				}

	// It doesn't matter whether we listen on "0.0.0.0", "::", or ""; go
	// treats them all the same.
	nodeIPs := []net.IP{net.IPv4zero}

	if !nodePortAddresses.MatchAll() {
		ips, err := nodePortAddresses.GetNodeIPs(proxyutil.RealNetwork{})
		if err == nil {
			nodeIPs = ips
		} else {

	}

	if primaryIP != "" {
		node.Status.Addresses = append(node.Status.Addresses,
			v1.NodeAddress{Type: v1.NodeInternalIP, Address: primaryIP},
		)
	}

	return node
}

// Test that getNodeIPs retries on failure
func Test_getNodeIPs(t *testing.T) {
	var chans [3]chan error

	client := clientsetfake.NewSimpleClientset(
		// node1 initially has no IP address.
		makeNodeWithAddress("node1", ""),

	if err != nil {
		return nil, err
	}

	s.Client, err = createClient(ctx, config.ClientConnection, master)
	if err != nil {
		return nil, err
	}

	rawNodeIPs := getNodeIPs(ctx, s.Client, s.Hostname)
	s.PrimaryIPFamily, s.NodeIPs = detectNodeIPs(ctx, rawNodeIPs, config.BindAddress)

	if len(config.NodePortAddresses) == 1 && config.NodePortAddresses[0] == kubeproxyconfig.NodePortAddressesPrimary {

		tx.Delete(&knftables.Set{
			Name: nodePortIPsSet,
		})
	} else {
		tx.Flush(&knftables.Set{
			Name: nodePortIPsSet,
		})
		nodeIPs, err := proxier.nodePortAddresses.GetNodeIPs(proxier.networkInterfacer)
		if err != nil {
			proxier.logger.Error(err, "Failed to get node ip address matching nodeport cidrs, services with nodeport may not work as intended", "CIDRs", proxier.nodePortAddresses)
		}

			destinations,
			"-j", string(kubeNodePortsChain))
	} else {
		nodeIPs, err := proxier.nodePortAddresses.GetNodeIPs(proxier.networkInterfacer)
		if err != nil {
			proxier.logger.Error(err, "Failed to get node ip address matching nodeport cidrs, services with nodeport may not work as intended", "CIDRs", proxier.nodePortAddresses)
		}

			for _, ipStr := range nodeAddressSet.UnsortedList() {
				nodeIPs = append(nodeIPs, netutils.ParseIPSloppy(ipStr))
			}
		} else {
			allNodeIPs, err := proxier.nodePortAddresses.GetNodeIPs(proxier.networkInterfacer)
			if err != nil {
				proxier.logger.Error(err, "Failed to get node IP address matching nodeport cidr")
			} else {
				for _, ip := range allNodeIPs {
					if !ip.IsLoopback() {