ode>istio-system</code> namespace
is used incorrectly. Further, ensure the <code>hosts</code> value is correct.</p></li><li><p>Deploy the updated network configuration file:</p><pre><code class=language-command>$ kubectl replace -f UPDATED_NETWORK_CONFIG.yaml</code></pre></li></ol><p>When all your applications have been migrated and tested, you can repeat the Istio upgrade process, removing the
<code>--set global.proxy.image=proxy</code> option. This will set the default proxy to <code>docker.io/istio/proxy