On a recent deployment where VhostuserSocketGroup was configured, we ran into the issue described here: https://access.redhat.com/solutions/6274281 We might need to call out in the documentation that NeutronVhostuserSocketDir needs to be set if VhostuserSocketGroup is set. Reported by: darin.sorrentino https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.2/html/network_functions_virtualization_planning_and_configuration_guide/assembly_ovsdpdk_parameters#annotations:a394598f-069f-4f25-b9db-df362ffb70f8