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Forum Replies

  1. Why did I use a loopback with a prefix instead of prefix 2001:DB8:0:23::/64 (the link between NPTv6 and H3)? I tried this the first time but it doesn’t work because H3 will do a neighbor solicitation for 2001:DB8:0:23::1/64 (the translated address). Since nobody responds to that address, the ping fails.

    I guess the question is - what if you changed the IP of H1 to 2001:DB8:0:12::2/64 (and swapped G2 to ::1)

    Then the translated address for H1 would be 2001:DB8:0:23::2/64 - so NPTV6 should respond to the neighbour solicitation :wink:

  2. Hello Chris.

    Yes that makes sense. You might want to try to lab it for confirmation and let us know of your results…

    Laz

  3. I don’t understand the use of this prefix
    If the prefix is give by a ISP it do not belong to the Customer and if you are the owner of the prefix you can use BGP to still make it available
    Is there a pratical scenario where the is an advantage of using NPTv6

    Cordially

  4. Hello Fabrice

    IPv4 and IPv6 are similar in that they separate their respective addresses into two sections. The terminology used is somewhat different however. Where an IPv4 address is separated into the network portion and the host portion using a subnet mask, an IPv6 address is separated into a prefix and a host identifier using the prefix length.

    So for an IP address of 2001:DB8:0:12::1/64 as in the lesson, the prefix is 2001:DB8:0:12, the host identifier is ::1 and the prefix length is 64. 64 indicates what part of the address is the prefix, that is, the

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