From the course: Cisco Certified Network Associate (CCNA) v1.1 (200-301) Cert Prep

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IPv6 unique local

IPv6 unique local

(electronic music) - [Instructor] An IPv6 unique local address can be routed within your company, but it's not routable on the public internet. So within your company, yeah, we could route between R1 and R2 or maybe a couple of other routers within your company using an IPv6 unique local address such as FD00::2. However, we could not route that out to the public internet. Here is the format of an IPv6 unique local address. It begins with the seven bits of 1111 110. Then there is an L bit followed by a Global ID. You can refer to the Subnet ID within your company and the Interface ID that is the host address of this router interface. And the addressing by definition starts with FC00::/7. And in my example, I don't have FC. I've got FD. Is that okay? Yeah. Because we're not saying what that fourth bit in the second nibble is necessarily. We're saying in that second nibble, in other words, the second hexadecimal digit, it has to begin with 110, but there's no rule that the fourth bit in…

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