+-------------------------------------------------------------+
   |                                                             |
   |              +------------------+                    IRB PE |
   | Attachment   | +------------------+                         |
   | Circuit(AC1) | |  +----------+    |                MPLS/NVO tnl
 ----------------------*Bridge    |    |                    +-----
   |              | |  |Table(BT1)|    |    +-----------+  / \    \
   |              | |  |          *---------*           |<--> |Eth|
   |              | |  |  VLAN x  |    |IRB1|           |  \ /    /
   |              | |  +----------+    |    |           |   +-----
   |              | |     ...          |    |  IP-VRF1  |        |
   |              | |  +----------+    |    |  RD2/RT2  |MPLS/NVO tnl
   |              | |  |Bridge    |    |    |           |   +-----
   |              | |  |Table(BT2)|    |IRB2|           |  / \    \
   |              | |  |          *---------*           |<--> |IP |
 ----------------------*  VLAN y  |    |    +-----------+  \ /    /
   |  AC2         | |  +----------+    |                    +-----
   |              | |    MAC-VRF1      |                         |
   |              +-+    RD1/RT1       |                         |
   |                +------------------+                         |
   |                                                             |
   |                                                             |
   +-------------------------------------------------------------+