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+Patterns from this folder are used for two purposes:
+1. Configure the real node interfaces as specified in the inventory.
+2. Provide the following list of interfaces for the underlay level:
+  - br_mgm: Access from infrastructure management network / admin network / DHCP / PXE
+  - br_ctl: OpenStack control network for internal services
+  - br-prv: For tenant networks with VLAN segmentation
+  - br-ten: For tenant networks with VXLAN segmentation
+  - br-mesh: Endpoint for VXLAN tunnels that are used by br-ten
+  - br-floating: Connection to the floating network
+  - vhost0: for OpenContrail workloads
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