_TAGS=false</code>.</p><h2 id=envoyfilter-xds-v2-removal><code>EnvoyFilter</code> XDS v2 removal</h2><p>Envoy has removed support for the XDS v2 API. <code>EnvoyFilter</code>s depending on these APIs must be updated before upgrading.</p><p>For example:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  name: add-header
spec:
  configPatches:
  - applyTo: HTTP_FILTER
    match:
      context: SIDECAR_OUTBOUND
      li