const (
	PathMax = 0x400
)

type RawSockaddrInet4 struct {
	Len    uint8
	Family uint8
	Port   uint16
	Addr   [4]byte /* in_addr */
	Zero   [8]int8
}

type RawSockaddrInet6 struct {
	Len      uint8
	Family   uint8
	Port     uint16
	Flowinfo uint32
	Addr     [16]byte /* in6_addr */
	Scope_id uint32
}

type RawSockaddrUnix struct {
	Len    uint8
	Family uint8

	for _, tt := range resolveUDPAddrTests {
		addr, err := ResolveUDPAddr(tt.network, tt.litAddrOrName)
		if !reflect.DeepEqual(addr, tt.addr) || !reflect.DeepEqual(err, tt.err) {
			t.Errorf("ResolveUDPAddr(%q, %q) = %#v, %v, want %#v, %v", tt.network, tt.litAddrOrName, addr, err, tt.addr, tt.err)
			continue
		}
		if err == nil {
			addr2, err := ResolveUDPAddr(addr.Network(), addr.String())

	}

	defer dnsWaitGroup.Wait()

	for _, tt := range lookupGoogleHostTests {
		addrs, err := LookupHost(tt.name)
		if err != nil {
			t.Fatal(err)
		}
		if len(addrs) == 0 {
			t.Error("got no record")
		}
		for _, addr := range addrs {
			if ParseIP(addr) == nil {
				t.Errorf("got %q; want a literal IP address", addr)
			}
		}
	}
}

func TestLookupLongTXT(t *testing.T) {

	tests := []struct {
		name     string
		addrs    []string
		expected bool
	}{
		{
			name:     "ipv4 only",
			addrs:    []string{"1.1.1.1", "127.0.0.1", "2.2.2.2"},
			expected: false,
		},
		{
			name:     "ipv6 only",
			addrs:    []string{"1111:2222::1", "::1", "2222:3333::1"},
			expected: true,
		},
		{
			name:     "mixed ipv4 and ipv6",

func (npa *NodePortAddresses) GetNodeIPs(nw NetworkInterfacer) ([]net.IP, error) {
	addrs, err := nw.InterfaceAddrs()
	if err != nil {
		return nil, fmt.Errorf("error listing all interfaceAddrs from host, error: %v", err)
	}

	// Use a map to dedup matches
	addresses := make(map[string]net.IP)
	for _, cidr := range npa.cidrs {
		for _, addr := range addrs {
			var ip net.IP

		aliases := addr.Aliases()
		removed.DeleteAll(aliases...)
		n := addr.ResourceName()
		have.Insert(n)
		haveAliases.InsertAll(aliases...)
		switch w.TypeUrl {
		case v3.WorkloadType:
			if addr.GetWorkload() != nil {
				resources = append(resources, &discovery.Resource{
					Name:     n,
					Aliases:  aliases,
					Resource: protoconv.MessageToAny(addr.GetWorkload()), // TODO: pre-marshal
				})

func TCPAddrFromAddrPort(addr netip.AddrPort) *TCPAddr {
	return &TCPAddr{
		IP:   addr.Addr().AsSlice(),
		Zone: addr.Addr().Zone(),
		Port: int(addr.Port()),
	}
}

// TCPConn is an implementation of the [Conn] interface for TCP network
// connections.
type TCPConn struct {
	conn
}

// KeepAliveConfig contains TCP keep-alive options.
//

)

// getLocalIP returns one of the local IP address and it should support IPv6 or not
func getLocalIP(dualStack bool) (netip.Addr, bool, error) {
	var isIPv6 bool
	var ipAddrs []netip.Addr
	addrs, err := LocalIPAddrs()
	if err != nil {
		return netip.Addr{}, isIPv6, err
	}

	for _, a := range addrs {
		if ipnet, ok := a.(*net.IPNet); ok {
			ip := ipnet.IP
			ipAddr, ok := netip.AddrFromSlice(ip)
			if !ok {

			value1, value2, value3 := sample[2], sample[1], sample[3]
			addrs, err := parseHexAddresses(value3)
			if err != nil {
				return nil, nil, fmt.Errorf("malformed sample: %s: %v", line, err)
			}

			var sloc []*Location
			for _, addr := range addrs {
				loc := locs[addr]
				if locs[addr] == nil {
					loc = &Location{
						Address: addr,
					}
					p.Location = append(p.Location, loc)

Michael Weiner <******@****.***> 1697542898 -0500