expectError: true,
		},
		{
			testName: "statsd address empty",
			key:      "statsd",
			option:   option.StatsdAddress(""),
			expected: nil,
		},
		{
			testName: "statsd address ipv4",
			key:      "statsd",
			option:   option.StatsdAddress("127.0.0.1:80"),
			expected: "{\"address\": \"127.0.0.1\", \"port_value\": 80}",
		},
		{
			testName: "statsd address ipv6",
			key:      "statsd",

      }
    }
    {{ end }}
    {{ if and .envoy_metrics_service_address .statsd }}
    ,
    {{ end }}
    {{ if .statsd }}
    {
      "name": "envoy.stat_sinks.statsd",
      "typed_config": {
        "@type": "type.googleapis.com/envoy.config.metrics.v3.StatsdSink",
        "address": {
          "socket_address": {{ .statsd }}
        }
      }
    }
    {{ end }}
  ]
  {{ end }}

  # https://lyft.github.io/envoy/docs/operations/admin.html
  # for more details
  proxyAdminPort: 15000
  #
  # Zipkin trace collector
  zipkinAddress: ""
  #
  # Statsd metrics collector converts statsd metrics into Prometheus metrics.
  statsdUdpAddress: ""
  #
  # Mutual TLS authentication between sidecars and istio control plane.
  controlPlaneAuthPolicy: NONE
  #

        "trace_id_128bit": true,
        "shared_span_context": false
      }
    }
  }
  
  ,
  "stats_sinks": [
    
    
    
    {
      "name": "envoy.stat_sinks.statsd",
      "typed_config": {
        "@type": "type.googleapis.com/envoy.config.metrics.v3.StatsdSink",
        "address": {
          "socket_address": {"address": "10.1.1.1", "port_value": 9125}
        }
      }

        "trace_id_128bit": true,
        "shared_span_context": false
      }
    }
  }
  
  ,
  "stats_sinks": [
    
    
    
    {
      "name": "envoy.stat_sinks.statsd",
      "typed_config": {
        "@type": "type.googleapis.com/envoy.config.metrics.v3.StatsdSink",
        "address": {
          "socket_address": {"address": "10.1.1.1", "port_value": 9125}
        }
      }

          "envoy_grpc": {
            "cluster_name": "envoy_metrics_service"
          }
        }
      }
    }
    
    
    ,
    
    
    {
      "name": "envoy.stat_sinks.statsd",
      "typed_config": {
        "@type": "type.googleapis.com/envoy.config.metrics.v3.StatsdSink",
        "address": {
          "socket_address": {"address": "10.1.1.1", "port_value": 9125}
        }
      }

          "envoy_grpc": {
            "cluster_name": "envoy_metrics_service"
          }
        }
      }
    }
    
    
    ,
    
    
    {
      "name": "envoy.stat_sinks.statsd",
      "typed_config": {
        "@type": "type.googleapis.com/envoy.config.metrics.v3.StatsdSink",
        "address": {
          "socket_address": {"address": "10.1.1.1", "port_value": 9125}
        }
      }

}

func DataDogAddress(value string) Instance {
	return newOptionOrSkipIfZero("datadog", value).withConvert(addressConverter(value))
}

func StatsdAddress(value string) Instance {
	return newOptionOrSkipIfZero("statsd", value).withConvert(addressConverter(value))
}

func TracingTLS(value *networkingAPI.ClientTLSSettings, metadata *model.BootstrapNodeMetadata, isH2 bool) Instance {
	return newOptionOrSkipIfZero("tracing_tls", value).

          "envoy_grpc": {
            "cluster_name": "envoy_metrics_service"
          }
        }
      }
    }
    
    
    ,
    
    
    {
      "name": "envoy.stat_sinks.statsd",
      "typed_config": {
        "@type": "type.googleapis.com/envoy.config.metrics.v3.StatsdSink",
        "address": {
          "socket_address": {"address": "10.1.1.1", "port_value": 9125}
        }
      }

		if x.ServiceCluster == "" {
			proxyConfig.ClusterName = &meshconfig.ProxyConfig_ServiceCluster{ServiceCluster: serviceCluster}
		}
	}
	// resolve statsd address
	if proxyConfig.StatsdUdpAddress != "" {
		addr, err := network.ResolveAddr(proxyConfig.StatsdUdpAddress)
		if err != nil {
			log.Warnf("resolve StatsdUdpAddress failed: %v", err)
			proxyConfig.StatsdUdpAddress = ""