We are configuring Neutron's vpnaas extension and although the guide seems to be quite short, it looks like that there are some dependencies that we are not aware of since we are receiving this error when we start the neutron server: WARNING stevedore.named [req-dca2e9a8-1799-45c7-9380-f247510af7e5 - - - - -] Could not load neutron_vpnaas.services.vpn.device_drivers.libreswan_ipsec.LibreSwanDriver We have followed this guide https://docs.openstack.org/neutron/latest/admin/vpnaas-scenario.html and before that we have also installed the below packages from the repos: openstack-neutron-vpnaas-17.0.0-2.el8.noarch libreswan-3.32-7.el8_3.x86_64 our config files are the below: l3_agent.ini [DEFAULT] interface_driver = linuxbridge debug = true [AGENT] extensions = vpnaas [vpnagent] vpn_device_driver = neutron_vpnaas.services.vpn.device_drivers.libreswan_ipsec.LibreSwanDriver neutron_vpnaas.conf [service_providers] service_provider = VPN:openswan:neutron_vpnaas.services.vpn.service_drivers.ipsec.IPsecVPNDriver:default vpn_agent.ini is empty since the guide documents the changes in the l3_agent.ini file in neutron.conf we have also added the below: service_plugins = router,vpnaas At this point, my main question would be, is VPNaaS supported with linux bridge or just with OpenvSwitch? Thanks in advance