Re: Aggregation for IPv4-compatible IPv6 address space

[Fred Baker <fred () cisco com>]

in the most recent architecture, rfc 4291, that was deprecated. The  
exact statement is

2.5.5.1.  IPv4-Compatible IPv6 Address

   The "IPv4-Compatible IPv6 address" was defined to assist in the IPv6
   transition.  The format of the "IPv4-Compatible IPv6 address" is as
   follows:

   |                80 bits               | 16 |      32 bits        |
   +--------------------------------------+--------------------------+
   |0000..............................0000|0000|    IPv4 address     |
   +--------------------------------------+----+---------------------+

   Note: The IPv4 address used in the "IPv4-Compatible IPv6 address"
   must be a globally-unique IPv4 unicast address.

   The "IPv4-Compatible IPv6 address" is now deprecated because the
   current IPv6 transition mechanisms no longer use these addresses.
   New or updated implementations are not required to support this
   address type.

I should think you are within bounds to not announce it at all.

On Feb 4, 2008, at 6:09 AM, snort bsd wrote:

> Hi all:
>
> With IPv4-compatible IPv6 address space, could I aggregate the  
> address space?
>
> say 192.168.0.0/16 become ::192.168/112? or It must be converted to  
> native IPv6 address space?
>
> Just wondering,
>
>
>
>
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