Chapter 2 Advanced Routing for FortiOS 5.0 : Dynamic Routing Overview : Comparison of dynamic routing protocols : Features of dynamic routing protocols : IPv6 Support
  
IPv6 Support
IPv4 addressing is in common use everywhere around the world. IPv6 has much larger addresses and it is used by many large companies and government departments. IPv6 is not as common as IPv4 yet, but more companies are adopting it.
If your network uses IPv6, your dynamic routing protocol must support it. None of the dynamic routing protocols originally supported IPv6, but they all have additions, expansions, or new versions that do support IPv6. For more information, see “RIP and IPv6”, “BGP and IPv6”, “OSPFv3 and IPv6”, or “Integrated IS-IS”.