>
        </h6>
<p>
          <span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></span> Safe.
        </p>
<p>
          <span class="emphasis"><em>Shared</em></span> <span class="emphasis"><em>objects:</em></span> Unsafe.
        </p>
<h6>
<a name="boost_asio.reference.ip__icmp.socket.h4"></a>
          <span class="phrase"><a name="boost_asio.reference.ip__icmp.socket.requirements"></a></span><a class="link" href="socket.html#boost_asio.reference.ip__icmp.socket.requi