Add NACK processing
diff --git a/wscript b/wscript
index 3264657..77b33ad 100644
--- a/wscript
+++ b/wscript
@@ -30,7 +30,7 @@
 def build(bld):
     deps = ['core', 'network', 'point-to-point',
             'topology-read','internet','applications',
-            'point-to-point-layout']
+            'point-to-point-layout', 'netanim']
     if bld.env['ENABLE_PYTHON_BINDINGS']:
         deps.append ('visualizer')