<code>Ingress</code> is configured to handle &ldquo;httpbin.example.com&rdquo;,
but in your test environment you have no DNS binding for that host and are simply sending your request to the ingress IP.</p></li><li><p>Access any other URL that has not been explicitly exposed. You should see an HTTP 404 error:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ curl -s -I -HHost:httpbin.example.com &#34;http://$INGRESS_HOST:$INGRESS_PORT/headers&#34;
HTTP/1.1 404 Not Found
...
</code></p