+-----------------------------------------------------+
|                        MPTCP                        |
+-----------------+-----------------+-----------------+
|       TCP       |       TCP       |       TCP       |
+-----------------------------------------------------+
|  MX Adaptation  |  MX Adaptation  |  MX Adaptation  |
|  Layer          |  Layer          |  Layer          |
|  (optional)     |  (optional)     |  (optional)     |
+-----------------------------------------------------+
|  Access #1 IP   |  Access #2 IP   |  Access #3 IP   |
+-----------------+-----------------+-----------------+