One of those distributed container management systems like Kubernetes normally has some integrated way of handling **replication of containers** while still supporting **load balancing** for the incoming requests. All at the **cluster level**.

		//    This can be problematic: double mirroring, fault injection, request manipulation, ....
		//    Instead, we consider this to workload traffic. This gives the same behavior as if we were an application doing internal load balancing
		//    with ztunnel.
		//    Note: there is a pretty valid case for wanting to send to the service from ingress. This gives a two tier delegation.

	if b.N == 0 {
		return // Nothing to do when probing.
	}
	// Calculate grain size as number of iterations that take ~100µs.
	// 100µs is enough to amortize the overhead and provide sufficient
	// dynamic load balancing.
	grain := uint64(0)
	if b.previousN > 0 && b.previousDuration > 0 {
		grain = 1e5 * uint64(b.previousN) / uint64(b.previousDuration)
	}
	if grain < 1 {
		grain = 1
	}

		valid bool
	}{
		{
			name: "valid load balancer with simple load balancing", in: &networking.LoadBalancerSettings{
				LbPolicy: &networking.LoadBalancerSettings_Simple{
					Simple: networking.LoadBalancerSettings_ROUND_ROBIN,
				},
			},
			valid: true,
		},

		{
			name: "valid load balancer with consistentHash load balancing", in: &networking.LoadBalancerSettings{

	// GoawayChance is the probability that send a GOAWAY to HTTP/2 clients. When client received
	// GOAWAY, the in-flight requests will not be affected and new requests will use
	// a new TCP connection to triggering re-balancing to another server behind the load balance.
	// Default to 0, means never send GOAWAY. Max is 0.02 to prevent break the apiserver.
	GoawayChance float64

     * concurrently, returning once any connection connects successfully.
     *
     * This implements Happy Eyeballs ([RFC 6555][rfc_6555]), balancing connect latency vs.
     * wasted resources.
     *
     * Defaults to enabled, call with [fastFallback] = false to revert to 4.x behaviour.
     *
     * [rfc_6555]: https://datatracker.ietf.org/doc/html/rfc6555

		ConfigString: mustReadFile(t, "tests/testdata/config/destination-rule-locality.yaml"),
	})

	m := s.MemRegistry
	addUdsEndpoint(s.Discovery, m)

	// enable locality load balancing and add relevant endpoints in order to test
	addLocalityEndpoints(m, "locality.cluster.local")
	addLocalityEndpoints(m, "locality-no-outlier-detection.cluster.local")

func (info *endpointInfo) Port() int {
	return int(info.port)
}

// Uses mac prefix and IPv4 address to return a mac address
// This ensures mac addresses are unique for proper load balancing
// There is a possibility of MAC collisions but this Mac address is used for remote endpoints only
// and not sent on the wire.
func conjureMac(macPrefix string, ip net.IP) string {
	if ip4 := ip.To4(); ip4 != nil {

							headlessTarget := match.Headless.Any(to)
							if !headlessTarget && len(toClusters.ByNetwork()[fromCluster.NetworkName()]) > 1 {
								// Conditionally check reached clusters to work around connection load balancing issues
								// See https://github.com/istio/istio/issues/32208 for details
								// We want to skip this for requests from the cross-network pod

	registerStdTestSpecially := map[string]bool{
		// testdir can run normally as part of "go test std cmd", but because
		// it's a very large test, we register is specially as several shards to
		// enable better load balancing on sharded builders. Ideally the build
		// system would know how to shard any large test package.
		"cmd/internal/testdir": true,
	}

	// Fast path to avoid the ~1 second of `go list std cmd` when