       <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">enum <a class="el" href="icmp_8h.html#a17637465f209385e5d19ef47fd9266a5">icmp_dur_type</a>&#160;</td>
          <td class="paramname"><em>t</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Send an icmp 'destination unreachable' packet, called from <a class="el" href="group__lwip__nosys.html#ga3c420dab0