[python-win32] Calling Win32_NetworkAdapterConfiguration routines from WMI com object

[Rohit Kumar]

Thanks in advance for help. I am trying to set the ip address
of a network interface using win32com module and unable to do 
so. I have tried searching a lot but wasn't able to get a 
answer for the issue. Here is the code I am running : 

import win32com.client
obj = win32com.client.Dispatch("WbemScripting.SWbemLocator")
wmobj = obj.ConnectServer("localhost","root\cimv2")
nobj = wmobj.ExecQuery("Select * from Win32_NetworkAdapterConfiguration")
for n in nobj:
    print n.Caption
    n.SetMTU('9000')

When I run this code it errors out with following error :

Traceback (most recent call last): 
File "", line 3, in n.SetMTU('9000') 
File"C:\Python27\lib\site-packages\win32com\client\dynamic.py", 
line 505, in getattr ret = 
self.oleobj.Invoke(retEntry.dispid,0,invoke_type,1) 
com_error: (-2147352567, 'Exception occurred.', 
(0, u'SWbemObjectEx', u'Invalid method ',None, 0, -2147217362), None)

I did some more debugging and found that I can access any variables
 of Win32Networking class but whenever I try to call any method of 
the class it returns me this same error.