docs/en-US/ip-load-balancing.xml

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<section id="ip-load-balancing">
    <title>IP Load Balancing</title>
    <para>The user may choose to associate the same public IP for multiple guests. &PRODUCT; implements a TCP-level load balancer with the following policies.</para>
    <itemizedlist>
        <listitem><para>Round-robin</para></listitem>
        <listitem><para>Least connection</para></listitem>
        <listitem><para>Source IP</para></listitem>
    </itemizedlist>
    <para>This is similar to port forwarding but the destination may be multiple IP addresses.</para>
</section>