diff --git a/examples/csma-multicast.cc b/examples/csma-multicast.cc
index 18f39a3d7..a00393374 100644
--- a/examples/csma-multicast.cc
+++ b/examples/csma-multicast.cc
@@ -135,11 +135,11 @@ main (int argc, char *argv[])
     Eui48Address("08:00:2e:00:00:02"));
 
   uint32_t nd2Lan1 = CsmaIpv4Topology::AddIpv4CsmaNetDevice (n2, lan1, 
-    Eui48Address("08:00:2e:00:00:00"));
+    Eui48Address("08:00:2e:00:00:03"));
   uint32_t nd3 = CsmaIpv4Topology::AddIpv4CsmaNetDevice (n3, lan1, 
-    Eui48Address("08:00:2e:00:00:01"));
+    Eui48Address("08:00:2e:00:00:04"));
   uint32_t nd4 = CsmaIpv4Topology::AddIpv4CsmaNetDevice (n4, lan1, 
-    Eui48Address("08:00:2e:00:00:02"));
+    Eui48Address("08:00:2e:00:00:05"));
 
   NS_DEBUG ("nd0 = " << nd0);
   NS_DEBUG ("nd1 = " << nd1);