- the actual code is in pkg/install - including a readiness probe, monitoring.
    - it also sets up a UDS socket for istio-cni to send logs to this container.
    - based on config, it may run the 'repair' controller that detects pods where istio setup fails and restarts them, or created in corner cases.

This can be a `Service` or a `Workload`.

The address type has the following goals:
* It should support (but not require) on-demand lookups.
  * Specifically, ztunnel should be able to send a request to the control plane to answer "I got a request to send traffic to 1.1.1.1, what is 1.1.1.1?"

}

/*
To clean up stale ztunnels

	we may need to ztunnel to send its (uid, bootid / boot time) to us
	so that we can remove stale entries when the ztunnel pod is deleted
	or when the ztunnel pod is restarted in the same pod (remove old entries when the same uid connects again, but with different boot id?)

	save a queue of what needs to be sent to the ztunnel pod and send it one by one when it connects.

		"--ctmask", fmt.Sprintf("0x%x", InpodRestoreMask),
	)

	// CLI: -A ISTIO_OUTPUT ! -o lo -p udp -m udp --dport 53 -j REDIRECT --to-port 15053
	//
	// DESC: If this is a UDP DNS request to a non-localhost resolver, send it to ztunnel DNS proxy port
	if redirectDNS {
		iptablesBuilder.AppendRule(
			iptableslog.UndefinedCommand, ChainInpodOutput, iptablesconstants.NAT,
			"!", "-o", "lo",
			"-p", "udp",
			"-m", "udp",

#### Partial Computations

Along with caching, partial computations are a critical performance optimization to ensure that we do not need to build (or send) every resource to every proxy on every change. This is discussed more in the Config Serving section.

### Config Serving

		}

		var prevResIps []*cniv1.IPConfig
		if conf.PrevResult != nil {
			prevResult := conf.PrevResult.(*cniv1.Result)
			prevResIps = prevResult.IPs
		}

		// Only send event if this pod "would be" an ambient-watched pod - otherwise skip
		if podIsAmbient {
			cniClient := newCNIClient(conf.CNIEventAddress, constants.CNIAddEventPath)

		// not found
		return nil
	}
	// found
	res := ObjectToInstance(svc)
	messages.Add(msg.NewUpdateIncompatibility(res,
		"meshConfig.defaultConfig.tracer", "1.21",
		"tracing is no longer by default enabled to send to 'zipkin.istio-system.svc'; "+
			"follow https://istio.io/latest/docs/tasks/observability/distributed-tracing/telemetry-api/",
		"1.21"))
	return nil
}

		Long: `Creates a WorkloadGroup resource that provides a template for associated WorkloadEntries.
The default output is serialized YAML, which can be piped into 'kubectl apply -f -' to send the artifact to the API Server.`,
		Example: "  istioctl x workload group create --name foo --namespace bar --labels app=foo,bar=baz " +
			"--ports grpc=3550,http=8080 --annotations annotation=foobar --serviceAccount sa",