# Pastebin hv0DDE8m
# ps auxf | grep vif_plug
root     1292298 24.6  0.1 7427660 998816 ?      Sl   Jul16  73:25 /openstack/venvs/nova-19.0.8/bin/python2 /openstack/venvs/nova-19.0.8/bin/privsep-helper --config-file /etc/nova/nova.conf --privsep_context vif_plug_ovs.privsep.vif_plug --privsep_sock_path /tmp/tmp_4Zg6T/privsep.sock