Normalizing namespace usage (ndnSIM namespace is now always under ns3)
diff --git a/utils/random-policy.h b/utils/random-policy.h
index c745b3b..3bfb6e2 100644
--- a/utils/random-policy.h
+++ b/utils/random-policy.h
@@ -26,6 +26,8 @@
 #include <boost/intrusive/options.hpp>
 #include <boost/intrusive/set.hpp>
 
+namespace ns3
+{
 namespace ndnSIM
 {
 
@@ -159,5 +161,6 @@
 };
 
 } // ndnSIM
+} // ns3
 
 #endif // RANDOM_POLICY_H