diff --git a/examples/isl-example.cc b/examples/isl-example.cc
index 151cf45..b9708e9 100644
--- a/examples/isl-example.cc
+++ b/examples/isl-example.cc
@@ -12,6 +12,43 @@ using namespace ns3;
 
 NS_LOG_COMPONENT_DEFINE ("IslExample");
 
+void PrepareNds (NodeContainer &nodes, Ipv6InterfaceContainer &interfaces)
+{
+  // prepare NDS cache
+  for (uint32_t i = 0; i < nodes.GetN (); i++)
+    {
+      Ptr<Node> node = nodes.Get (i);
+      Ptr<NetDevice> dev = node->GetDevice (1); // TODO right index?
+      uint32_t ifIndex = dev->GetIfIndex ();
+      Ptr<Ipv6L3Protocol> ipv6 = node->GetObject<Ipv6L3Protocol> ();
+      Ptr<Ipv6Interface> interface = ipv6->GetInterface (ifIndex);
+      Ptr<NdiscCache> cache = interface->GetNdiscCache ();
+      for (uint32_t j = 0; j < nodes.GetN (); j++)
+        {
+          // every other device
+          if (i == j)
+            {
+              continue;
+            }
+          Ptr<NetDevice> otherDevice = nodes.Get (j)->GetDevice (1);
+          Address address = otherDevice->GetAddress (); // MAC
+
+          // and associated address
+          uint32_t otherIfIndex = otherDevice->GetIfIndex ();
+          // TODO which address to use? site-local, global, link?
+          Ipv6Address ipaddr = interfaces.GetAddress (otherIfIndex, 1); // IP
+
+          // update cache
+          NdiscCache::Entry* entry = cache->Lookup (ipaddr);
+          if (entry == 0)
+            {
+              entry = cache->Add (ipaddr);
+            }
+          entry->SetMacAddress (address);
+        }
+    }
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -21,7 +58,7 @@ main (int argc, char *argv[])
   Time::SetResolution (Time::NS);
   LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);
   LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);
-  LogComponentEnable ("UdpEchoClient", LOG_LEVEL_INFO);
+  LogComponentEnable ("IslExample", LOG_LEVEL_DEBUG);
 
   NodeContainer nodes;
   nodes.Create (3);
@@ -42,6 +79,8 @@ main (int argc, char *argv[])
 
   Ipv6InterfaceContainer interfaces = address.Assign (devices);
 
+  PrepareNds (nodes, interfaces);
+
   UdpEchoServerHelper echoServer (9);
   ApplicationContainer serverApps = echoServer.Install (nodes);
 
@@ -52,12 +91,12 @@ main (int argc, char *argv[])
   echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
 
   for (uint32_t i = 1; i < nodes.GetN (); i++)
-  {
-    Address destAddress = interfaces.GetAddress (i, 0);
-    echoClient.SetAttribute ("RemoteAddress", AddressValue (destAddress));
+    {
+      Address destAddress = interfaces.GetAddress (i, 0);
+      echoClient.SetAttribute ("RemoteAddress", AddressValue (destAddress));
 
-    clientApps.Add (echoClient.Install (nodes.Get (i-1)));
-  }
+      clientApps.Add (echoClient.Install (nodes.Get (i-1)));
+    }
 
   clientApps.Start (Seconds (2.0));
   clientApps.Stop (Seconds (10.0));