.html" title="ip::icmp"><code class="computeroutput">ip::icmp</code></a>
        class contains flags necessary for ICMP sockets.
      </p>
<h5>
<a name="boost_asio.reference.ip__icmp.h3"></a>
        <span class="phrase"><a name="boost_asio.reference.ip__icmp.thread_safety"></a></span><a class="link" href="ip__icmp.html#boost_asio.reference.ip__icmp.thread_safety">Thread
        Safety</a>
      </h5>
<p>
        <span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></spa