diff --git a/tools/munger/scripts/action_gen.py b/tools/munger/scripts/action_gen.py
new file mode 100644
index 0000000..22c7b4b
--- /dev/null
+++ b/tools/munger/scripts/action_gen.py
@@ -0,0 +1,97 @@
+#!/usr/bin/python
+#
+# This python script generates action subclasses
+#
+
+import re
+
+print """
+# Python OpenFlow action wrapper classes
+
+from ofp import *
+
+# This will never happen; done to avoid lint warning
+if __name__ == '__main__':
+    def of_message_parse(msg): return None
+
+"""
+
+################################################################
+#
+# Action subclasses
+#
+################################################################
+
+action_structs = [
+    'output',
+    'vlan_vid',
+    'vlan_pcp',
+    'dl_addr',
+    'nw_addr',
+    'tp_port',
+    'nw_tos',
+    'vendor_header']
+
+action_types = [
+    'output',
+    'set_vlan_vid',
+    'set_vlan_pcp',
+    'strip_vlan',
+    'set_dl_src',
+    'set_dl_dst',
+    'set_nw_src',
+    'set_nw_dst',
+    'set_nw_tos',
+    'set_tp_src',
+    'set_tp_dst',
+    'enqueue',
+    'vendor'
+]
+action_types.sort()
+
+action_class_map = {
+    'output' : 'ofp_action_output',
+    'set_vlan_vid' : 'ofp_action_vlan_vid',
+    'set_vlan_pcp' : 'ofp_action_vlan_pcp',
+    'strip_vlan' : 'ofp_action_header',
+    'set_dl_src' : 'ofp_action_dl_addr',
+    'set_dl_dst' : 'ofp_action_dl_addr',
+    'set_nw_src' : 'ofp_action_nw_addr',
+    'set_nw_dst' : 'ofp_action_nw_addr',
+    'set_nw_tos' : 'ofp_action_nw_tos',
+    'set_tp_src' : 'ofp_action_tp_port',
+    'set_tp_dst' : 'ofp_action_tp_port',
+    'enqueue' : 'ofp_action_enqueue',
+    'vendor' : 'ofp_action_vendor_header'
+}
+
+template = """
+class action_--TYPE--(--PARENT_TYPE--):
+    \"""
+    Wrapper class for --TYPE-- action object
+    \"""
+    def __init__(self):
+        --PARENT_TYPE--.__init__(self)
+        self.type = --ACTION_NAME--
+        self.len = self.__len__()
+    def show(self, prefix=''):
+        print prefix + "action_--TYPE--"
+        --PARENT_TYPE--.show(self, prefix)
+"""
+
+if __name__ == '__main__':
+    for (t, parent) in action_class_map.items():
+        action_name = "OFPAT_" + t.upper()
+        to_print = re.sub('--TYPE--', t, template)
+        to_print = re.sub('--PARENT_TYPE--', parent, to_print)
+        to_print = re.sub('--ACTION_NAME--', action_name, to_print)
+        print to_print
+
+    # Generate a list of action classes
+    print "action_class_list = ("
+    prev = None
+    for (t, parent) in action_class_map.items():
+        if prev:
+            print "    action_" + prev + ","
+        prev = t
+    print "    action_" + prev + ")"