In article <slrn3vfse5kunj.5be.martijnb@atlas.ipv6.stack.nl>,
Martijn van Buul  <martijnb@atlas.ipv6.stack.nl> wrote:
>It occurred to me that Hubert Feyrer wrote in gmane.os.netbsd.devel.network:
>> When you want your 'laptop' to become a router all of a sudden, you 
>> basically need more address space. I wonder why not just ask for it, as 
>> you do in the first case (DHCP, ...), and then advertize it on the 
>> "internal" network/interface, and just route it.
>
>That'd work, but there's one problem:
>
>It's stateful, both to the laptop and the router-of-the-laptop. And, in
>case of the autoconfig'ed host, you need to claim to own an interface
>identifier that you simply don't have.

Well, you can use the interface of the machine you are proxying for,
right? Then your machine will have as many interfaces as the machines
behind you plus your own, and you just bridge the traffic for the machines
behind you (no need to be in promiscuous mode). 

christos