Index and user manipulation broken with mongos versions before 2.4.0

>>> c.foo.bar.create_index('foo')

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "pymongo/collection.py", line 1058, in create_index

    indexes=[index])

  File "pymongo/database.py", line 410, in command

    read_preference, **kwargs)[0]

  File "pymongo/database.py", line 321, in _command

    for doc in cursor:

  File "pymongo/cursor.py", line 988, in next

    if len(self.__data) or self._refresh():

  File "pymongo/cursor.py", line 932, in _refresh

    self.__uuid_subtype))

  File "pymongo/cursor.py", line 875, in __send_message

    self.__compile_re)

  File "pymongo/helpers.py", line 110, in _unpack_response

    error_object)

pymongo.errors.OperationFailure: database error: unrecognized command: createIndexes

>>> c.foo.add_user("foo", "bar")

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "pymongo/database.py", line 755, in add_user

    read_preference=ReadPreference.PRIMARY)

  File "pymongo/database.py", line 410, in command

    read_preference, **kwargs)[0]

  File "pymongo/database.py", line 321, in _command

    for doc in cursor:

  File "pymongo/cursor.py", line 988, in next

    if len(self.__data) or self._refresh():

  File "pymongo/cursor.py", line 932, in _refresh

    self.__uuid_subtype))

  File "pymongo/cursor.py", line 875, in __send_message

    self.__compile_re)

  File "pymongo/helpers.py", line 110, in _unpack_response

    error_object)

pymongo.errors.OperationFailure: database error: unrecognized command: usersInfo

>>> c.foo.remove_user("foo")

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "pymongo/database.py", line 807, in remove_user

    writeConcern=self._get_wc_override())

  File "pymongo/database.py", line 437, in command

    uuid_subtype, compile_re, **kwargs)[0]

  File "pymongo/database.py", line 337, in _command

    for doc in cursor:

  File "pymongo/cursor.py", line 1038, in next

    if len(self.__data) or self._refresh():

  File "pymongo/cursor.py", line 982, in _refresh

    self.__uuid_subtype))

  File "pymongo/cursor.py", line 925, in __send_message

    self.__compile_re)

  File "pymongo/helpers.py", line 109, in _unpack_response

    error_object)

pymongo.errors.OperationFailure: database error: unrecognized command: dropUser