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  /                     \        ¿ÜºÎ IP            _________      ³»ºÎ IP
 |   Internet         |     123.12.23.43       |  linux     |  192.168.0.1
 |   google.com  | <---[¿ÜºÎ ·£Ä«µå]-| machine |--[³»ºÎ ·£Ä«µå]
  \_____________/                              ---------            |
                                                                                   |
                                      _____________              ______|_______
                                     | 192.168.0.2  |            /                      \
                                     |    ³»ºÎ        |-------|    192.168.0.0     |
                                     |    ÄÄÇ»ÅÍ     |            |      ÀÎÆ®¶ó³Ý      |
                                      -------------             \______________/