As much as possible, remove dependence on python 2.5
diff --git a/tests/testutils.py b/tests/testutils.py
index 6f8e0b4..df7831e 100644
--- a/tests/testutils.py
+++ b/tests/testutils.py
@@ -1,5 +1,13 @@
 
-import scapy.all as scapy
+import sys
+
+try:
+    import scapy.all as scapy
+except:
+    try:
+        import scapy as scapy
+    except:
+        sys.exit("Need to install scapy for packet parsing")
 
 import oftest.controller as controller
 import oftest.cstruct as ofp