root@node3:~# grep -iEv '^$|^#' /etc/neutron/plugin.ini
[ml2]
type_drivers = flat,gre
tenant_network_types = gre
mechanism_drivers = openvswitch
[ml2_type_flat]
flat_networks = external
[ml2_type_vlan]
[ml2_type_gre]
tunnel_id_ranges = 1:1000
[ml2_type_vxlan]
[securitygroup]
enable_security_group = Truea
enable_ipset = True
[ovs]
local_ip = 10.0.1.103
enable_tunneling = True
[agent]
tunnel_types = gre