TA B L E   4 .   C o m p re s s e d   F o r m   o f   A d d re s s i n g

The third form will be useful in mixed IPv4/IPv6 environments. This

form is represented as  X:X:X:X:X:X:X:X:D.D.D.D. Where the Xs repre 

sent the hexadecimal values of the six high order 16 bit pieces of the

address. The Ds represent the standard IPv4 decimal value representa 

tion of the four low order 8 bit pieces of the address. Table 5 displays

the mixed IPv4 and IPv6 address forms and the corresponding com 

pressed form.

TA B L E   5 .   M i x e d   I P v 4   a n d   I P v 6   A d d re s s e s   a n d   T h e i r

C o r re s p o n d i n g   C o m p re s s e d   F o r m

In each address type, IPv6 identifies interfaces, not nodes. A node is

identified by a unicast address assigned to one of its interfaces.

Unicast Addressing

There are six types of unicast IPv6 addresses: 

  Aggregatable global unicast addresses

  Link local addresses

  Site local addresses

  Special addresses

  NSAP addresses

  IPX addresses

U N D E R S TA N D I N G   I P   A D D R E S S I N G

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