+------------+
                  |  INTERNET  ----------+
                  |            |         |
                  +------------+         |
                                         |
                                         |
                                         |
                                       A |
                                   +-------+
                                   |6LBR   |
                       +-----------|(root) |-------+
                       |           +-------+       |
                       |                           |
                       |                           |
                       |                           |
                       |                           |
                       | B                         |C
                   +---|---+                   +---|---+
                   |  6LR  |                   |  6LR  |
         +---------|       |--+             +---       ---+
         |         +-------+  |             |  +-------+  |
         |                    |             |             |
         |                    |             |             |
         |                    |             |             |
         |                    |             |             |
         | D                  |  E          |             |
       +-|-----+          +---|---+         |             |
       |  6LR  |          |  6LR  |         |             |
       |       |    +------       |         |             |
       +---|---+    |     +---|---+         |             |
           |        |         |             |             |
           |        |         +--+          |             |
           |        |            |          |             |
           |        |            |          |             |
           |        |            |        I |          J  |
        F  |        | G          | H        |             |
     +-----+-+    +-|-----+  +---|--+   +---|---+     +---|---+
     |  RAL  |    | RUL   |  | RAL  |   |  RAL  |     | RUL   |
     |  6LN  |    |  6LN  |  | 6LN  |   |  6LN  |     |  6LN  |
     +-------+    +-------+  +------+   +-------+     +-------+