icmp/icmpmessagepayload.cpp
     icmp/icmppacket.cpp
     icmp/icmppinger.cpp
-    icmp/ipv4header.cpp
+    ip/ipv4header.cpp
     link/linkstatusanalyzer.cpp
     link/statusnotifiercommand.cpp
     tcp/tcppinger.cpp
 
 
 #include <boost/asio.hpp>
 
-#include "icmp/ipv4header.h"
 #include "icmp/icmpheader.h"
 #include "icmp/icmpdata.h"
 #include "icmp/icmptype.h"
+#include "ip/ipv4header.h"
 
 //-----------------------------------------------------------------------------
 // IcmpPacket
 
 #include "icmp/icmpheader.h"
 #include "icmp/icmppacket.h"
 #include "icmp/icmptype.h"
-#include "icmp/ipv4header.h"
+#include "ip/ipv4header.h"
 
 using namespace std;
 using boost::asio::const_buffers_1;
 
 // Distributed under the Boost Software License, Version 1.0.
 //    (See accompanying file LICENSE_1_0.txt or copy at
 //          http://www.boost.org/LICENSE_1_0.txt)
-#include "icmp/ipv4header.h"
+#include "ip/ipv4header.h"
 
 #include <limits>