Hi, Stop counting /64 subnets the same way you count ipv4 addresses. The proper concept to be able to have plug-and-play customer-grade network equipment would be to use prefix delegation. Thus counting levels of network devices instead.
Consider the scenario in the attached sketch. It's a home with a router cpe that get's a block from isp via PD, could be /56 or /48. Customer have a wireless router connected, that requests a block from cpe. later the customer buys another wireless router to extend the network, and connects it to the old wireless router where it requests a block. This is a case that happens today already with multiple levels of NAT, not something that might eventually happen in the future. A reasonable assumption is that each sublevel device gets a PD block 4 bits longer then the last level. This allows for up to 15 directly connected routers. If the ISP hands out /56, then the first wireless router gets a /60 assigned, allowing for 16 attached /64 networks. The second wireless router can't get an block (out of bits), and will not work, plug-and-play breaks. This is likely to cause support calls as it worked with ipv4 (using NAT4444). If a /48 is assigned to each customer, then the first wireless router gets a /52, second router a /56 and there is room to connect one more level of devices. All works out of the box, everyone is happy, no support calls. On Fri, 2 Oct 2015 08:56:54 -0600 Brett A Mansfield <li...@silverlakeinternet.com> wrote: > The problem with this is some of us smaller guys don't have the > ability to get IPv6 addresses from our upstream providers that don't > support it. And even if we did do dual stack, then we're paying for > both IPv4 and IPv6 addresses. The cost is just too high. ARIN should > give anyone with a current IPv4 address block a free equivalently > sized IPv6 block (256 IPv4 = 256 /56s or one /48 IPv6). If they did > that, there would be a lot more IPv6 adoption in dual stack. > > I don't understand why anyone would give an end user a /48. That is > over 65,000 individual devices. A /56 is 256 devices which is the > standard /24 IPv4. What home user has that many devices??? A /56 to > the home should be standard. Based on giving each customer a /56, I > could run my entire small ISP off a single /48. I know there are a > lot of IP addresses in the IPv6 realm, but why waste them? At the > rate were going, everything will have an IP address soon. Maybe one > day each item of your clothing will need their own IP address to tell > you if it's time to wash or if it needs repair. Stranger things have > happened. > > Thank you, > Brett A Mansfield > > > On Oct 2, 2015, at 8:27 AM, Steve Mikulasik > > <steve.mikula...@civeo.com> wrote: > > > > I think more focus needs to be for carriers to deliver dual stack > > to their customers door step, whether they demand/use it or not. > > Small ISPs are probably in the best position to do this and will > > help push the big boys along with time. If we follow the network > > effect (reason why IPv4 lives and IPv6 is slowly growing), IPv6 > > needs more nodes, all other efforts are meaningless if they do not > > result in more users having IPv6 delivered to their door. > > > > I think people get too lost in the weeds when they start focusing > > on device support, home router support, user knowledge, etc. Just > > get it working to the people and we can figure out the rest later. > > > > > > > > > > -----Original Message----- > > From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Mark > > Andrews Sent: Thursday, October 01, 2015 6:01 PM > > To: Matthew Newton <m...@leicester.ac.uk> > > Cc: nanog@nanog.org > > Subject: Re: How to force rapid ipv6 adoption > > > > > > In message <20151001232613.gd123...@rootmail.cc.le.ac.uk>, Matthew > > Newton writes: > > > > Additionally it is now a OLD addressing protocol. We are about to > > see young adults that have never lived in a world without IPv6. It > > may not have been universally available when they were born but it > > was available. There are definitely school leavers that have never > > lived in a world where IPv6 did not exist. My daughter will be one > > of them next year when she finishes year 12. IPv6 is 7 months > > older than she is. > > > > Some of us have been running IPv6 in production for over a decade > > now and developing products that support IPv6 even longer. > > > > We have had 17 years to build up a universal IPv6 network. It > > should have been done by now. > > > > Mark > > > >> -- > >> Matthew Newton, Ph.D. <m...@le.ac.uk> > >> > >> Systems Specialist, Infrastructure Services, I.T. Services, > >> University of Leicester, Leicester LE1 7RH, United Kingdom > >> > >> For IT help contact helpdesk extn. 2253, <ith...@le.ac.uk> > > -- > > Mark Andrews, ISC > > 1 Seymour St., Dundas Valley, NSW 2117, Australia > > PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org > > >
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