Calculating the IPv6 Prefix Problems

Routers take the interface IPv6 address configuration and add a connected IPv6 route to the IPv6 routing table, for the IPv6 prefix (subnet) connected to that interface. This section provides some practice problems so that you can do the same math and predict the prefix value that the router will add to the routing table.

Table K-2 lists practice problems that all use the same prefix length (/64), which is the most common prefix length you see. Table K-3 that follows lists additional practice problems, with prefix lengths other than /64.

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Table K-2 Finding the IPv6 Prefix When Using a /64 Prefix Length

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