2009/12/2 Brian E Carpenter <[email protected]>: > On 2009-11-30 19:47, Hui Deng wrote: > ... >> 1) definition of sub-network >> one example could be A: 10.1.1.2 and B: 10.1.1.3, then A knows >> he is in the same sub-network as B. > > I am having some trouble with this statement. How does > A know it is in the same *copy* of Net 10 as B? That all > depends where the address of B has come from. If it has come > from a third-party referral, it could be anywhere in the > universe. > > You can't rely on the bits in an RFC1918 address to tell > you about adjacency, unless you know for sure that the address > has local scope. In your model, that seems to mean knowing for > sure that B is on the same access router. How does A know that? Normally enhanced DNS server will not advertise other domain's NET 10 address, it's bad for referal, same problem as NAT64, so this solution doesn't scale as I said.
thanks -Hui > > Brian > _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
