Max, > Proto-41 or 6to4 is a point-to-point tunnels in any case. So if you want > to communicate directly to the significant part of the world this way, > you need to set up and maintain hundreds of tunnels, as well as hundreds > of BGP sessions. Also you have to go through a long and hard > administrative work to negotiate all those tunnels.
6to4 is an NBMA / mesh link. > In our case, you need to set up only one tunnel and only one BGP session > to the ROUTE SERVER, which provide you all the routing information about > all the peers and prefixes. same with BGP tunnels, using 6to4 next-hops. or ISATAP, or automatic tunnels... cheers, Ole