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2.4.3.2.1.1 Global Unicast Addresses
Based
on
the
above
figure,
global
unicast
addresses
are
identified
by
Format
Prefix
of
001.
IPv6
global
unicast
address
is
equivalent
to
IPv4’s
public
IP
addresses.
They
are
globally routable and reachable on the IPv6 portion of the Internet.
2.4.3.2.1.2 Link-local
Addresses
Link- local addresses are
identified by the Format Prefix of 1111 1110 10, and are used to
communicate with
neighbor
nodes on the same
link.
For example, on a single
link IPv6
network
with
no
router,
link-local
addresses
are
used
to
communicate
between
hosts
on
the
link.
Link- local addresses are equivalent to Automatic Private IP Addressing
(APIPA)
IPv4
addresses
autoconfigured
with
169.254.0.0/24
addresses.
The
scope
of
link- local
is
local
link.
2.4.3.2.1.3 Site-Local Addresses
Site- local addresses are
identified by
the Format Prefix of 1111 1110 11, and are
used to
communicate to other
hosts on the
local
network.
Site- local addresses are equivalent to
private IP addresses
in IPv4.
Site- local addresses are
not reachable
from other sites, and
routers
must
not
forward
site-local
traffic
outside
the
site.
Site- local
addresses
can
be
used
in
addition
to
global
addresses.
The
first
48
bits
are
always
fixed
for
site- local
addresses, beginning with FEC0::/48. The next 16 bits for network ID is assigned
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