Neutron Layer2 emulated network (flat?)

So I have an VM / appliance that is very broadcast / multicast heavy and I need to provide an emulated Layer2 network. If I create a standard OS::Neutron:Net network, it appears to be created as network_type "vxlan". From what I can tell, this is causing me problems in the application.

net_1:
type: OS::Neutron::Net
properties:
name: { get_param: net_name_1 }