en-US/best-practices-virtual-router.xml

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<section id="best-practices-virtual-router">
    <title>Best Practices for Virtual Routers</title>
    <itemizedlist>
        <listitem><para>WARNING: Restarting a virtual router from a hypervisor console deletes all the iptables rules. To work around this issue, stop the virtual router and start it from the &PRODUCT; UI.</para></listitem>
        <listitem><para>WARNING: Do not use the destroyRouter API when only one router is available in the network, because restartNetwork API with the cleanup=false parameter can't recreate it later. If you want to destroy and recreate the single router available in the network, use the restartNetwork API with the cleanup=true parameter.</para></listitem>
    </itemizedlist>
    
    
    
</section>