Unicast IPv6 Addresses
IPv6 supports three main types of unicast addresses: unique local, global unicast, and link-local. This section takes a brief look at unique local and link-local addresses.
Unique Local IPv6 Addresses
Unique Local
Unique local unicast IPv6 addresses have the same function as IPv4 RFC 1918 private addresses. RFC 4193 states that these addresses should be used inside a private organization and should not be advertised into the Internet. Unique local unicast addresses begin with hex FC00::/7, with the format shown in Figure 3-9. The L-bit is set to a 1 if the address is locally assigned. This makes FD the first two hex digits ...
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