[radvd-devel-l] Stateless autoconfiguration for < /64 prefix

[Pekka Savola]

On Tue, 29 Mar 2005, Tiago Duarte (Ext_PDM&FC LDA) wrote:
> example, /48.
> I'm guessing that the last 64 bit should be automatically configured
> following the EUI-64 identifier, but what happens with the bit between
> /48 and /64?
> Is it possible to have stateless autoconfiguration for prefixes smaller
> than /64?
> Is there any standard defined?
> What radvd does in this case?

Current specifications don't support stateless address 
autoconfiguration with a prefix length differing from /64.

Some implementations might (but I don't know of any) listen for 
shorter prefixes (e.g., /48) on a designated upstream interface, and 
advertise /64's from it on designated downstream interfaces, but we 
don't do that.

If you have a shorter prefix, you'll have to delegate the prefixes 
manually or using something like DHCPv6-PD, and then run radvd (or 
something else) for /64's obtained from there.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings