I am trying to create a lab with a single server which has a single NIC card and as you know kolla-ansible needs two nic for all-in-one (api and neutron nic). 

I want to test VLAN base provider for VMs so can I configure single nic on trunk port and create two VLAN interfaces foo.10 and foo.20 bridge and assign foo.10 to api and foo.20 for neutron. Does that make sense and will help the test lab? 

I was also reading somewhere that you need to create a veth interface two split single nic for kolla. 

Did anyone test kolla with single nic with two bridges to create dual nic simulation?