to the Gateway API conformance tests, Istio will no longer accept the default group of <code>gateway.networking.k8s.io</code> for a Service <code>parentRef</code> in a Gateway API route (e.g. <code>HTTPRoute</code>, <code>TCPRoute</code>, etc). Instead, you must explicitly set <code>group: ""</code> like so:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: productpage
spec:
  parentRefs:
  - group: &#34;&#