return strings.HasSuffix(strings.ToLower(s), strings.ToLower(suffix))
}

func lookupLocalhost(ctx context.Context, fn func(context.Context, string, string) ([]IPAddr, error), network, host string) ([]IPAddr, error) {
	switch host {
	case "localhost":
		return []IPAddr{
			{IP: IPv4(127, 0, 0, 1)},
			{IP: IPv6loopback},
		}, nil
	default:
		return fn(ctx, network, host)
	}
}

	sa_mask       uint32
	sa_flags      int32
}

type siginfo struct {
	si_signo  int32
	si_errno  int32
	si_code   int32
	si_pid    int32
	si_uid    uint32
	si_status int32
	si_addr   *byte
	si_value  [8]byte
	si_band   int64
	__pad     [7]uint64
}

type timeval struct {
	tv_sec    int64
	tv_usec   int32
	pad_cgo_0 [4]byte
}

func (tv *timeval) set_usec(x int32) {

	addresses := make(map[string]net.IP)
	for _, cidr := range npa.cidrs {
		for _, addr := range addrs {
			var ip net.IP
			// nw.InterfaceAddrs may return net.IPAddr or net.IPNet on windows, and it will return net.IPNet on linux.
			switch v := addr.(type) {
			case *net.IPAddr:
				ip = v.IP
			case *net.IPNet:
				ip = v.IP
			default:
				continue
			}

			if cidr.Contains(ip) {
				addresses[ip.String()] = ip

			var ip net.IP
			switch v := addr.(type) {
			case *net.IPNet:
				ip = v.IP
			case *net.IPAddr:
				ip = v.IP
			default:
				continue
			}
			ipAddr, okay := netip.AddrFromSlice(ip)
			if !okay {
				continue
			}
			// unwrap the IPv4-mapped IPv6 address
			unwrapAddr := ipAddr.Unmap()

	if shared {
		clone := make([]IPAddr, len(addrs))
		copy(clone, addrs)
		addrs = clone
	}
	return addrs, nil
}

// ipAddrsEface returns an empty interface slice of addrs.
func ipAddrsEface(addrs []IPAddr) []any {
	s := make([]any, len(addrs))
	for i, v := range addrs {
		s[i] = v
	}
	return s
}

// LookupPort looks up the port for the given network and service.
//

var destPortDispatchRegexp = regexp.MustCompile(`^meta l4proto \. th dport vmap @(\S+)$`)

var sourceAddrRegexp = regexp.MustCompile(`^ip6* saddr (!= )?(\S+)`)
var sourceAddrLookupRegexp = regexp.MustCompile(`^ip6* saddr (!= )?\{([^}]*)\}`)
var sourceAddrLocalRegexp = regexp.MustCompile(`^fib saddr type local`)

var endpointVMAPRegexp = regexp.MustCompile(`^numgen random mod \d+ vmap \{(.*)\}$`)

	ss_size   uintptr
	ss_flags  int32
	pad_cgo_0 [4]byte
}

type siginfo struct {
	si_signo  int32
	si_errno  int32
	si_code   int32
	si_pid    int32
	si_uid    uint32
	si_status int32
	si_addr   uint64
	si_value  [8]byte
	_reason   [40]byte
}

type mcontext struct {
	mc_onstack       uint64
	mc_rdi           uint64
	mc_rsi           uint64
	mc_rdx           uint64

	}

	for _, tc := range testCases {
		t.Logf("test case: %s", tc.name)

		fakeCloser := fake.NewCloser(t)
		client := &csiDriverClient{
			driverName: "Fake Driver Name",
			nodeV1ClientCreator: func(addr csiAddr, m *MetricsManager) (csipbv1.NodeClient, io.Closer, error) {
				nodeClient := fake.NewNodeClient(false /* stagingCapable */)
				nodeClient.SetNextError(tc.err)
				nodeClient.SetNodeGetInfoResp(&csipbv1.NodeGetInfoResponse{

// Minimal RFC 6724 address selection.

package net

import (
	"net/netip"
	"sort"
)

func sortByRFC6724(addrs []IPAddr) {
	if len(addrs) < 2 {
		return
	}
	sortByRFC6724withSrcs(addrs, srcAddrs(addrs))
}

func sortByRFC6724withSrcs(addrs []IPAddr, srcs []netip.Addr) {
	if len(addrs) != len(srcs) {
		panic("internal error")
	}
	addrAttr := make([]ipAttr, len(addrs))

)

func _C_malloc(n uintptr) unsafe.Pointer { return C.malloc(C.size_t(n)) }
func _C_free(p unsafe.Pointer)           { C.free(p) }

func _C_ai_addr(ai *_C_struct_addrinfo) **_C_struct_sockaddr { return &ai.ai_addr }
func _C_ai_family(ai *_C_struct_addrinfo) *_C_int            { return &ai.ai_family }
func _C_ai_flags(ai *_C_struct_addrinfo) *_C_int             { return &ai.ai_flags }