Look like i have this patch missing in my mitaka RDO repo https://bugs.launchpad.net/neutron/+bug/1602436 Patch: https://launchpadlibrarian.net/273591819/router_info.patch So i have manually applied patch with following command: patch < router_info.patch it successfully patched file but python i need to compile it in pyo & pyc extension right? When i tried to do i got this error [root at compute-1 tmp]# python -O -m compileall router_info.py Compiling router_info.py ... Sorry: IndentationError: expected an indented block (router_info.py, line 342) I have checked all space/tabs etc but not able to find anything :( here is the patched file in pastebin http://pastebin.com/JdF1d8rN (see 342 line)