e <code>istio-system</code> namespace, the third namespace on
the lookup path, although this isn&rsquo;t recommended unless the destination rule is really a global
configuration that is applicable in all namespaces, and it would require administrator authority.</p><p>Istio uses this restricted destination rule lookup path for two reasons:</p><ol><li>Prevent destination rules from being defined that can override the behavior of services
in completely unrelated namespaces.</li><li>Have a clear lookup order in