diff --git a/CHANGES.html b/CHANGES.html
index f66a95e4d..7e30a789a 100644
--- a/CHANGES.html
+++ b/CHANGES.html
@@ -54,7 +54,7 @@ us a note on ns-developers mailing list.</p>
 <h1>Changes from ns-3.30 to ns-3.31</h1>
 <h2>New API:</h2>
 <ul>
-<li> New attributes for <b> Ipv4L3Protocol</b> have been added to enable RFC 6621-based duplicate packet detection (DPD) (<b>EnableRFC6621</b>) and to control the cache expiration time (<b>DuplicateExpire</b>).</li>
+<li> New attributes for <b> Ipv4L3Protocol</b> have been added to enable RFC 6621-based duplicate packet detection (DPD) (<b>EnableDuplicatePacketDetection</b>) and to control the cache expiration time (<b>DuplicateExpire</b>).</li>
 </ul>
 <h2>Changes to existing API:</h2>
 <ul>
diff --git a/src/internet/model/ipv4-l3-protocol.cc b/src/internet/model/ipv4-l3-protocol.cc
index 98fb54200..a5446aea7 100644
--- a/src/internet/model/ipv4-l3-protocol.cc
+++ b/src/internet/model/ipv4-l3-protocol.cc
@@ -71,10 +71,10 @@ Ipv4L3Protocol::GetTypeId (void)
                    TimeValue (Seconds (30)),
                    MakeTimeAccessor (&Ipv4L3Protocol::m_fragmentExpirationTimeout),
                    MakeTimeChecker ())
-    .AddAttribute ("EnableRFC6621",
-                   "Enable RFC 6621 packet de-duplication",
+    .AddAttribute ("EnableDuplicatePacketDetection",
+                   "Enable multicast duplicate packet detection based on RFC 6621",
                    BooleanValue (false),
-                   MakeBooleanAccessor (&Ipv4L3Protocol::m_enableRfc6621),
+                   MakeBooleanAccessor (&Ipv4L3Protocol::m_enableDpd),
                    MakeBooleanChecker ())
     .AddAttribute ("DuplicateExpire", "Expiration delay for duplicate cache entries",
                    TimeValue (MilliSeconds (1)),
@@ -649,7 +649,7 @@ Ipv4L3Protocol::Receive ( Ptr<NetDevice> device, Ptr<const Packet> p, uint16_t p
       socket->ForwardUp (packet, ipHeader, ipv4Interface);
     }
 
-  if (m_enableRfc6621 && ipHeader.GetDestination ().IsMulticast () && UpdateDuplicate (packet, ipHeader))
+  if (m_enableDpd && ipHeader.GetDestination ().IsMulticast () && UpdateDuplicate (packet, ipHeader))
     {
       NS_LOG_LOGIC ("Dropping received packet -- duplicate.");
       m_dropTrace (ipHeader, packet, DROP_DUPLICATE, m_node->GetObject<Ipv4> (), interface);
diff --git a/src/internet/model/ipv4-l3-protocol.h b/src/internet/model/ipv4-l3-protocol.h
index e4d2b443d..cf9194006 100644
--- a/src/internet/model/ipv4-l3-protocol.h
+++ b/src/internet/model/ipv4-l3-protocol.h
@@ -576,7 +576,7 @@ private:
    */
   void RemoveDuplicate (DupMap_t::const_iterator iter);
 
-  bool                 m_enableRfc6621; //!< Enable RFC 6621 de-duplication
+  bool                 m_enableDpd;     //!< Enable multicast duplicate packet detection
   DupMap_t             m_dups;          //!< map of packet duplicate tuples to expiry event
   Time                 m_expire;        //!< duplicate entry expiration delay
 
diff --git a/src/internet/test/ipv4-deduplication-test.cc b/src/internet/test/ipv4-deduplication-test.cc
index 5d1076d98..aefb25852 100644
--- a/src/internet/test/ipv4-deduplication-test.cc
+++ b/src/internet/test/ipv4-deduplication-test.cc
@@ -266,7 +266,7 @@ Ipv4DeduplicationTest::DoRun (void)
 {
   // multicast target
   const std::string targetAddr = "239.192.100.1";
-  Config::SetDefault ("ns3::Ipv4L3Protocol::EnableRFC6621", BooleanValue (m_mode != DISABLED));
+  Config::SetDefault ("ns3::Ipv4L3Protocol::EnableDuplicatePacketDetection", BooleanValue (m_mode != DISABLED));
   Config::SetDefault ("ns3::Ipv4L3Protocol::DuplicateExpire", TimeValue (m_expire));
 
   // Create topology