to validate server identity.</li><li><strong>Improved</strong> <code>istioctl validate</code> to check for unknown fields in resources.
(<a href=https://github.com/istio/istio/issues/24861>Issue #24861</a>)</li><li><strong>Improved</strong> <code>istioctl install</code> to emit a warning when attempting to install Istio in an old, non supported Kubernetes version.
(<a href=https://github.com/istio/istio/issues/26141>Issue #26141</a>)</li><li><strong>Removed</strong> <code>istioctl manifest apply</code>. The