Handbook of IPv4 to IPv6 Transition

IPv6 Addressing  n  33

As seen in Table 2.2, site-local addresses are identified by the format prefix

of 1111 1110 11 (they are equivalent to the IPv4 private address space 10.0.0.0/8,

172.16.0.0/12, and 192.168.0.0/16). Hence, if there are private intranets that do

not have a direct, routed connection to the IPv6 Internet, they can use site-local

addresses without conflicting with aggregatable global unicast addresses. However,

one should keep in mind that increasingly virtually all private intranets have con

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nections to the Internet. Also, if end-to-end anytime, anyplace, VoIP communica

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tion is to be supported, aggregatable global unicast may be indicated for each VoIP

device. is is because site-local addresses are not reachable from other ...