(usagi-users 01020) Re: Scoped Addresses

[Pekka Savola <pekkas@xxxxxxxxxx>]

On Mon, 12 Nov 2001, Bernd Walter wrote:
> > I am not suggesting routing packets from one site to another - I am just
> > saying that a particular machine may be connected to multiple sites
> > (without routing packets between those sites).
> 
> Well site local addresses are defined to be fec0::/10.
> Lets say each site has enough with /48 and the leaving 38 bits are
> filled with a site specific random value.
> If you are ever in need to connect to another site you have a
> (2^38)-1 : 1 chance that you don't collide.
> If you don't do you shouldn't be surprised some day.

Wanna bet more than one organization is going to pick the random value 
000....000 ? :-)

Systems connecting to more than one site-local domain may need two 
separate routing tables (in worst case, for each interface), I'm afraid.

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords