an><span class="special">(</span><span class="identifier">option</span><span class="special">);</span>
</pre>
<h5>
<a name="boost_asio.reference.ip__multicast__leave_group.h1"></a>
        <span><a name="boost_asio.reference.ip__multicast__leave_group.requirements"></a></span><a class="link" href="ip__multicast__leave_group.html#boost_asio.reference.ip__multicast__leave_group.requirements">Requirements</a>
      </h5>
<p>
        <span class="bold"><strong>Header: </strong></span><code class="literal">boost