"type": "STRICT_DNS",
      {{- if .envoy_metrics_service_tls }}
        "transport_socket": {{ .envoy_metrics_service_tls }},
      {{- end }}
      {{- if .envoy_metrics_service_tcp_keepalive }}
        "upstream_connection_options": {{ .envoy_metrics_service_tcp_keepalive }},
      {{- end }}
        "respect_dns_ttl": true,
        "dns_lookup_family": "{{ .dns_lookup_family }}",
        "connect_timeout": "1s",

		},
		{
			testName: "envoy metrics keepalive nil",
			key:      "envoy_metrics_service_tcp_keepalive",
			option:   option.EnvoyMetricsServiceTCPKeepalive(nil),
			expected: nil,
		},
		{
			testName: "envoy metrics keepalive",
			key:      "envoy_metrics_service_tcp_keepalive",
			option: option.EnvoyMetricsServiceTCPKeepalive(&networkingAPI.ConnectionPoolSettings_TCPSettings_TcpKeepalive{

}

func EnvoyMetricsServiceTCPKeepalive(value *networkingAPI.ConnectionPoolSettings_TCPSettings_TcpKeepalive) Instance {
	return newTCPKeepaliveOption("envoy_metrics_service_tcp_keepalive", value)
}

func EnvoyAccessLogServiceAddress(value string) Instance {
	return newOptionOrSkipIfZero("envoy_accesslog_service_address", value).withConvert(addressConverter(value))
}