Description of configuration options for linuxbridge

Configuration option=Default value	(Type) Description
physical_interface_mappings=	(ListOpt) List of <physical_network>:<physical_interface>
physical_interface_mappings=	(ListOpt) List of <physical_network>:<physical_interface>
tenant_network_type=local	(StrOpt) Network type for tenant networks (local, flat, vlan or none)
tenant_network_type=local	(StrOpt) Network type for tenant networks (local, vlan, or none)
tenant_network_type=vlan	(StrOpt) Network type for tenant networks (local, ib, vlan, or none)
tenant_network_type=local	(StrOpt) Network type for tenant networks (local, vlan, gre, vxlan, or none)