--- aj(a)sneep.net wrote: From: Alastair Johnson <aj(a)sneep.net> Scott Weeks wrote: : Finally, with VPRNs addresses could be reused. Just put : the customers in different VPRNs and duplicate the address : scheme. It's 'divide and conquer' methodology. I'm a : noobie to VPRNs, so flame me if this isn't feasible. I have : doused my flameproof underpants with beer, so I'm protected... :-) :: Oh yes. This is a valid methodology. Also, you don't :: really need every subscriber to be uniquely addressed across :: your entire network - to the closest PoP site or Super-PoP site :: is sufficient, depending on your topology. :: :: Of course, from your Ethernet switch/DSLAM/FTTx node/whatever, :: you know where and who the subscriber is, so you're not reliant :: on IP addressing to authorize content access, either.... Thanks for the answer. So, it seems that all customer's STBs could be put in as many VPRNs as necessary to divide them into groups such that RFC1918 space is never exhausted and each customer could get one (or as many as they request) IP address that's publically routable for their internet connectivity. Thus, if the Very Giant ISPs designed their network in this manner, IPv4 would take them as far as they need. Yes? scott