
148 Part Two • IPv6 Protocols
8.3.3 ENCODED NSAP ADDRESSES
NSAP addressing is used for OSI CLNP networks, and a mechanism for
encoding NSAP addresses into IPv6 addresses (as well as for encoding
IPv6 addresses within NSAP addresses) is defined in the experimental
RFC 1888, “OSI NSAPs and IPv6.” However, due to the relative scarcity
of CLNP networks and the recommendation that existing CLNP networks
should reimplement their addressing to support IPv6 directly, the NSAP-
encoded IPv6 allocation may suffer the same fate as the IPX allocation.
8.4 IPv6 Address Format
At 128 bits, IPv6 addresses can carry much more information than 32-bit
IPv4 addresses. An ...