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Forum Replies

  1. Hi Andria,

    For the automatic 6to4 tunneling we can’t use dynamic routing on the Tunnel interfaces. If you have a lot of IPv6 prefixes, it’s better to create some tunnels yourself and configure EIGRP or OSPFv3 on it.


  2. Hey Rene,

    Great write up! Why does Cisco recommend using Automatic 6 to 4 tunneling over ISATAP for inter area routing? I mean, I see the name intra-site, but trying to get more clarity on why ISATAP would not/or could not be used for inter area.

    Thank you


  3. Hi,

    Can anyone please explain me when the remaining 16 bits of the prefix part of a 6to4 IPV6 are used ? Since it is to allocate to a point to point tunnel interface and not to the IPv6 hosts behind the routers I can’t see why more than one IP should be needed

    Thanks a lot

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