rce IP address of the packet that arrives at the sidecar.</p><h2 id=auto-passthrough-gateway-mode><code>AUTO_PASSTHROUGH</code> Gateway mode</h2><p>Previously, gateways were configured with multiple Envoy <code>cluster</code> configurations for each Service in the cluster, even those
not referenced by any <code>Gateway</code> or <code>VirtualService</code>. This was added to support the <code>AUTO_PASSTHROUGH</code> mode on Gateway, generally used for exposing Services across networks.</p><p>However, this c