 ALPN protocol</a>
which requires mutual TLS (mTLS) to be enabled for the Envoy proxies
to exchange metadata successfully. This implies that if mTLS is not
enabled in your cluster, telemetry for TCP protocol will not include
peer information like workload name, namespace and labels.</p></li><li><p><strong>No mechanism for configuring custom buckets for histogram metrics</strong>
Mixer-based telemetry supported customizing buckets for histogram type metrics
like request duration and TCP byte sizes. In-proxy 