I am fighting with this for months. I want to develop a VPN Neutron plugin, but it is almost impossible to realize how to achieve it. this is a thread I opened months ago and Paul Mchali helped me a lot: http://lists.openstack.org/pipermail/openstack-dev/2014-February/028389.html I want to know the minimum requirements to develop a device driver and a service driver for a VPN Neutron plugin. I tried adding an empty device driver and I got this error: DeviceDriverImportError: Can not load driver :neutron.services.vpn.junos_vpnaas.device_drivers.fake_device_driver.FakeDeviceDriver Both Python file and class exists, but the implementation is empty. What is the problem? What I need to include in this file/class to avoid this error? Thank you. <http://dana.i2cat.net> <http://www.i2cat.net/en> Julio C. Barrera Juez [image: View my profile on LinkedIn] <http://es.linkedin.com/in/jcbarrera/en> Office phone: (+34) 93 357 99 27 (ext. 527) Office mobile phone: (+34) 625 66 77 26 Distributed Applications and Networks Area (DANA) i2CAT Foundation, Barcelona -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20140716/5fd63228/attachment.html>