[ipv6-wg at ripe.net] Re: What is a site?

On 9-mei-2005, at 12:46, Gert Doering wrote:

>> I ponder wether it would make sense to write up an example addressing
>> plan for a /32 standard allocation which people can use as a  
>> template...

> It would definitely be a nice thing to have.

This is what I came up with for two customers who are beginning IPv6  
deployment. It works both for DSL and colocation.

- assign each customer a 16-bit number (starting at 20 or so)
- for each customer, use a dedicated /64 for between your/their  
stuff, like 2001:db8:a:<cust-id>::/64
- use the ...1 address on your end, such as 2001:db8:a:<cust-id>::1
- route a /48 to the ...2 address, such as 2001:db8:<cust-id>::/48 to  
2001:db8:a:<cust-id>::2
- send router advertisements so hosts in the /64 can autoconfigure

Customers can now either use just the /64 with autoconfiguration or  
the /48 but then they need to set up an IPv6 router. This is not as  
transparent as I'd like it to be, and it's also kind of wasteful  
because it uses up a /48 for every customer even if they're not going  
to use it. But I think simplicity is key here, at least at this point  
in time when the stuff isn't as automatic as it could be. Having a / 
64 per customer is useful because that way you know which address  
goes with which customer. If you set up a shared /64 on a shared  
subnet you don't know which customer has which address.