> It is not about how many devices, it is about how many subnets, because you > may want to keep them isolated, for many reasons. > > It is not just about devices consuming lots of bandwidth, it is also about > many small sensors, actuators and so.
I have no problems with giving the customer several subnets. /56 is just fine for that. I haven't seen any kind of realistic scenarios which require /48 for residential users *and* will actually use lots and lots of subnets - without requiring a similar amount of manual configuration on the part of the customer. So we end up with /56 for residential users. > And I'm not saying to forget about what we have learn with DHCP, in > fact DHCPv6 has many new and good features, but for many reasons, > autonconfiguration is good enough, and much more simple. For our scenarios DHCPv6 is needed, autoconfiguration is *not* good enough. It seems quite likely that in many cases the CPE will use the /56 it gets from us (via DHCPv6 PD) as basis for autoconfiguration on the LAN side - and that's just fine and dandy. [I see no point in repeating the arguments for why autoconfiguration is not good enough - this has been beaten to death, repeatedly, on lots of IPv6 lists.] Steinar Haug, Nethelp consulting, sth...@nethelp.no
