+----------+        +----------+
                    | extNAT64 |        |          |
                    |    +     +--------+   IPv4   |
                    | extDNS64 |        |          |
                    +----+-----+        +----------+
                         |
+----------+             |
|   IPv6   |             |
|     +    +-------------+
|   CLAT   |
+----------+