
Emerging Technologies
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Provider-Based Addresses
The first official distribution of IPv6 addresses will be accomplished through
the use of provider-based addresses. Based on the initial allocation of IPv6
addresses as shown in Exhibit 13, each provider-based address will have the
three-bit prefix 010. That prefix will be followed by fields that identify the
registry that allocated the address, the service provider, and the subscriber.
The latter field actually consists of three sub-fields: a subscriber ID that can
represent an organization, and variable network and interface identification
fields used in a similar manner to IPv4 network and host fields. Exhibit ...