// NetworkingDNSDomain flag sets the domain for services, e.g. "myorg.internal".
	NetworkingDNSDomain = "service-dns-domain"

	// NetworkingServiceSubnet flag sets the range of IP address for service VIPs.
	NetworkingServiceSubnet = "service-cidr"

	// NetworkingPodSubnet flag sets the range of IP addresses for the pod network. If set, the control plane will automatically allocate CIDRs for every node.

				ConfigString: `
apiVersion: networking.istio.io/v1alpha3
kind: ServiceEntry
metadata:
  name: external-svc-mongocluster
spec:
  hosts:
  - mymongodb.somedomain 
  addresses:
  - 192.192.192.192/24 # VIPs
  ports:
  - number: 27018
    name: mongodb
    protocol: MONGO
  location: MESH_INTERNAL
  resolution: STATIC
  endpoints:
  - address: 2.2.2.2
  - address: 3.3.3.3
`,
			},

						Ips:       []string{"1.2.3.4"},
						Registry:  "Kubernetes",
						Shortname: "pod1.headless-svc",
						Namespace: "testns",
					},
					"pod3.headless-svc.testns.svc.cluster.local": {
						Ips:       []string{"19.6.7.8"},
						Registry:  "Kubernetes",
						Shortname: "pod3.headless-svc",
						Namespace: "testns",
					},
					"pod4.headless-svc.testns.svc.cluster.local": {

		// 2) or if we have an empty destination VIP (i.e. which we should never get in case some platform adapter improper handlings);
		// 3) or if the destination is a wildcard destination VIP with the listener bound to the wildcard as well.
		// In the above cited cases, the listener will be bound to 0.0.0.0. So SNI match is the only way to distinguish different

		if err == nil {
			var ips []string
			for _, ingress := range svc.Status.LoadBalancer.Ingress {
				ips = append(ips, ingress.IP)
			}
			info.Gateway = append(info.Gateway, ips...)
		}

		details.IPs = append(details.IPs, info)
	}

	// Populate the source Envoy's outbound clusters to the dest service.

						services[previous] = services[previous].DeepCopy()
					}
					// If it is seen second time, that means it is from a different cluster, update cluster VIPs.
					mergeService(services[previous], s, r)
				}
			}
		}
	}
	return services
}

// GetService retrieves a service by hostname if exists

	// hostnames. The IPs assigned to services are not
	// synchronized across istiod replicas as the DNS resolution
	// for these service entries happens completely inside a pod
	// whose proxy is managed by one istiod. That said, the algorithm
	// to allocate IPs is pretty deterministic that at stable state, two
	// istiods will allocate the exact same set of IPs for a given set of
	// service entries.

func (lb *ListenerBuilder) buildWaypointInbound() []*listener.Listener {
	listeners := []*listener.Listener{}
	// We create 3 listeners:
	// 1. Decapsulation CONNECT listener.
	// 2. IP dispatch listener, handling both VIPs and direct pod IPs.
	// 3. Encapsulation CONNECT listener, originating the tunnel
	wls, wps := findWaypointResources(lb.node, lb.push)

	listeners = append(listeners,
		lb.buildWaypointInboundConnectTerminate(),

	flagSet.StringVar(
		&cfg.Networking.ServiceSubnet, options.NetworkingServiceSubnet, cfg.Networking.ServiceSubnet,
		"Use alternative range of IP address for service VIPs.",
	)
	flagSet.StringVar(
		&cfg.Networking.PodSubnet, options.NetworkingPodSubnet, cfg.Networking.PodSubnet,

			// The kube dummy interface has all service VIPs assigned which
			// results in the service VIP being picked as the source IP to reach
			// a VIP. This leads to a connection from VIP:<random port> to
			// VIP:<service port>.
			// Always masquerading OUTPUT (node-originating) traffic with a VIP
			// source ip and service port destination fixes the outgoing connections.