Best route forwarding strategy
diff --git a/model/ccnx-fib.cc b/model/ccnx-fib.cc
index 38f0c65..164b46b 100644
--- a/model/ccnx-fib.cc
+++ b/model/ccnx-fib.cc
@@ -172,7 +172,7 @@
 }
     
 Ptr<CcnxFace>
-CcnxFibEntry::FindBestCandidate (int skip/* = 0*/)
+CcnxFibEntry::FindBestCandidate (int skip/* = 0*/) const
 {
   skip = skip % m_faces.size();
   return m_faces.get<i_nth> () [skip].GetFace ();
@@ -231,6 +231,7 @@
 
   return entry;
 }
+    
 
 std::ostream& operator<< (std::ostream& os, const CcnxFib &fib)
 {