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6.2. Disadvantages

6.2. Disadvantages​

This approach has the following disadvantages:

  • Not possible to route Local IPv6 prefixes on the global Internet with current routing technology. Consequentially, it is necessary to have the default behavior of site border routers to filter these addresses.

  • There is a very low probability of non-unique locally assigned Global IDs being generated by the algorithm in Section 3.2.3. This risk can be ignored for all practical purposes, but it leads to a theoretical risk of clashing address prefixes.

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