HOST
          +-----------------+
          |                 |
          | Zew. Adres      |
          | xxx.xxx.xxx.xxx |
          |                 |       SERWER 1
SIEĆ      |   +----------+  |   +--------------+
INTERNET  ----+--- eth0  |  |   |              |
          |   | tap0-----+------+---- nic0 ----- SIEĆ INTERNET
          |   | tap1-----+--+   | 192.168.1.13 |  (konieczna)
          |   +------+   |  |   +--------------+
          |              |  |          |
          | Wew. adres   |  |          |  <-- BEZPOŚREDNI TUNEL
          | 192.168.1.12 |  |          |
          |              |  |       SERWER 2
          |              |  |   +--------------+
          |              |  |   |              |
          |              |  +---+---- nic0 ----- SIEĆ INTERNET
          |              |      | 192.168.1.14 | (nie koniecz.)
          +--------------+      +--------------+