ress and not a hostname.</p><h2 id=example>Example</h2><p>You will receive this message:</p><pre><code class=language-plain data-expandlinks=true data-repo=istio>Info [IST0164] (MutatingWebhookConfiguration istio-sidecar-injector-external-istiod testing.yml:28) The address (https://999.999.999.999:5100/inject/cluster/your-cluster-name/net/network1) that was provided for the webhook (rev.namespace.sidecar-injector.istio.io) to reach the ingress gateway on the external control plane cluster is an IP address. 