c := tracer.OpenCensusAgent.Context
			opts = append(opts, option.OpenCensusAgentAddress(tracer.OpenCensusAgent.Address),
				option.OpenCensusAgentContexts(c))
		}

		opts = append(opts, option.TracingTLS(config.Tracing.TlsSettings, metadata, isH2))
	}

	// Add options for Envoy metrics.
	if config.EnvoyMetricsService != nil && config.EnvoyMetricsService.Address != "" {