or risk-averse environments, we have added a <strong>stable validation policy</strong>, a <a href=https://kubernetes.io/docs/reference/access-authn-authz/validating-admission-policy/>validating admission policy</a> which can ensure that only <code>v1</code> APIs and fields are used with Istio APIs.</p><p>In new environments, selecting the stable validation policy upon installing Istio will guarantee that all future Custom Resources created or updated are <code>v1</code> and contain only <code>v1</code> feat