on
the <code>PEER_METADATA_DISCOVERY</code> in the proxy and <code>PILOT_ENABLE_AMBIENT_CONTROLLERS</code> in the control plane.</li><li><strong>ALPN Token Control</strong>: There&rsquo;s a new setting called <code>PILOT_DISABLE_MX_ALPN</code> for the control plane. This lets you stop
using a specific token <code>istio-peer-exchange</code> that&rsquo;s normally needed for services to talk to each other.</li></ul><h3 id=traffic-mirroring-to-multiple-destinations>Traffic Mirroring to Multiple Destinations</h3