These
private addresses are local only to a particular link or site; therefore, they are never routed
outside of a particular company network. Private addresses have a ?¬?rst octet value of ???FE???
in hexadecimal notation, with the next hexadecimal digit being a value from 8 to F.
These addresses are further divided into two types, based on their scope.
?– Site-local addresses, described further as follows:
??” These are addresses similar to RFC 1918, ???Address Allocation for
Private Internets,??? in IPv4 today. The scope of these addresses is an
entire site or organization. They allow addressing within an organization
without needing to use a public pre?¬?x. Routers forward datagrams using
site-local addresses within the site, but not outside the site, to the public
Internet.
??” In hexadecimal, site-local addresses begin with FE and then C to F for
the third hexadecimal digit. So, these addresses begin with FEC, FED,
FEE, or FEF.
?– Link-local addresses, described further as follows:
??” The concept of link-local scope is new to IPv6. These addresses have a
smaller scope than site-local addresses; they refer only to a particular
physical link (physical network).
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