diff --git a/py_gen/templates/common.py b/py_gen/templates/common.py
index 737ed64..c694b9b 100644
--- a/py_gen/templates/common.py
+++ b/py_gen/templates/common.py
@@ -32,6 +32,9 @@
 import sys
 import struct
 import action
+:: if version >= 4:
+import meter_band # for unpack_list
+:: #endif
 import const
 import util
 import loxi.generic_util
diff --git a/py_gen/templates/init.py b/py_gen/templates/init.py
index 75d52be..190d65e 100644
--- a/py_gen/templates/init.py
+++ b/py_gen/templates/init.py
@@ -33,6 +33,9 @@
 :: if version >= 3:
 import oxm
 :: #endif
+:: if version >= 4:
+import meter_band
+:: #endif
 from const import *
 from common import *
 from loxi import ProtocolError
diff --git a/py_gen/templates/message.py b/py_gen/templates/message.py
index d81d5b7..228d2d0 100644
--- a/py_gen/templates/message.py
+++ b/py_gen/templates/message.py
@@ -36,6 +36,9 @@
 import const
 import common
 import action # for unpack_list
+:: if version >= 4:
+import meter_band # for unpack_list
+:: #endif
 import util
 import loxi.generic_util
 
diff --git a/py_gen/templates/meter_band.py b/py_gen/templates/meter_band.py
new file mode 100644
index 0000000..ca111d5
--- /dev/null
+++ b/py_gen/templates/meter_band.py
@@ -0,0 +1,67 @@
+:: # Copyright 2013, Big Switch Networks, Inc.
+:: #
+:: # LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with
+:: # the following special exception:
+:: #
+:: # LOXI Exception
+:: #
+:: # As a special exception to the terms of the EPL, you may distribute libraries
+:: # generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided
+:: # that copyright and licensing notices generated by LoxiGen are not altered or removed
+:: # from the LoxiGen Libraries and the notice provided below is (i) included in
+:: # the LoxiGen Libraries, if distributed in source code form and (ii) included in any
+:: # documentation for the LoxiGen Libraries, if distributed in binary form.
+:: #
+:: # Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler."
+:: #
+:: # You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain
+:: # a copy of the EPL at:
+:: #
+:: # http://www.eclipse.org/legal/epl-v10.html
+:: #
+:: # Unless required by applicable law or agreed to in writing, software
+:: # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+:: # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+:: # EPL for the specific language governing permissions and limitations
+:: # under the EPL.
+::
+:: import itertools
+:: import of_g
+:: include('_copyright.py')
+
+:: include('_autogen.py')
+
+import struct
+import const
+import util
+import loxi.generic_util
+import loxi
+
+def unpack_list(reader):
+    def deserializer(reader, typ):
+        parser = parsers.get(typ)
+        if not parser: raise loxi.ProtocolError("unknown meter band type %d" % typ)
+        return parser(reader)
+    return loxi.generic_util.unpack_list_tlv16(reader, deserializer)
+
+class MeterBand(object):
+    type = None # override in subclass
+    pass
+
+:: for ofclass in ofclasses:
+:: include('_ofclass.py', ofclass=ofclass, superclass="MeterBand")
+
+:: #endfor
+
+parsers = {
+:: sort_key = lambda x: x.type_members[0].value
+:: msgtype_groups = itertools.groupby(sorted(ofclasses, key=sort_key), sort_key)
+:: for (k, v) in msgtype_groups:
+:: v = list(v)
+:: if len(v) == 1:
+    ${k} : ${v[0].pyname}.unpack,
+:: else:
+    ${k} : parse_${k[12:].lower()},
+:: #endif
+:: #endfor
+}