conf-neutron

/etc/neutron/plugins/ml2/ml2_conf.ini

[ml2]
type_drivers = flat,vlan,vxlan
tenant_network_types = vxlan
mechanism_drivers = linuxbridge,l2population
extension_drivers = port_security
[ml2_type_flat]
flat_networks = public
[ml2_type_vlan]
[ml2_type_gre]
[ml2_type_vxlan]
vni_ranges = 1:1000
[ml2_type_geneve]
[securitygroup]
enable_ipset = True

/etc/neutron/plugins/ml2/linuxbridge_agent.ini
[linux_bridge]
physical_interface_mappings = public:eth4
[vxlan]
enable_vxlan = True
local_ip = 10.3.0.2
l2_population = True
[agent]
prevent_arp_spoofing = True
[securitygroup]
enable_security_group = True
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver

ifconfig -a | grep eth4 -A 2
eth4      Link encap:Ethernet  HWaddr 40:f2:e9:5d:5d:c8
          inet addr:10.3.0.2  Bcast:10.3.0.255  Mask:255.255.255.0
          inet6 addr: fe80::42f2:e9ff:fe5d:5dc8/64 Scope:Link