Residential users just buy another router for wifi coverage at the local wall mart. They have no clue about anything internet. That is why isp CPE devices should always perform dhcp-pd on their own to provide a prefix to the downstream devices so those have globally routed ipv6 too. For that to work you need concepts like route aggregation in the form of a /48 for the CPE so it can hand out a /56 to the customer bought CPE. Seth -------- Oorspronkelijk bericht -------- Van: Mike Hammett <nanog@ics-il.net> Datum: 09-07-2015 04:03 (GMT+01:00) Aan: nanog@nanog.org Onderwerp: Re: Dual stack IPv6 for IPv4 depletion I wasn't aware that residential users had (intentionally) multiple layers of routing within the home. I'm also not sure what address length has to do with routability, other than networks filtering prefix lengths. If that's an issue, that customer is covered by the ISP's larger allocation, or they get their own PI space if they're BGPing. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com ----- Original Message ----- From: "Karl Auer" <kauer@biplane.com.au> To: nanog@nanog.org Sent: Wednesday, July 8, 2015 8:36:41 PM Subject: Re: Dual stack IPv6 for IPv4 depletion On Wed, 2015-07-08 at 19:57 -0500, Mike Hammett wrote:

Isn't /56 the standard end-user allocation?

No - it's just a common one. And a bad one. /48s for all opens up a whole different world of end-user reachability, routability and flexibility that a mere /56 does not. Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (kauer@biplane.com.au) http://www.biplane.com.au/kauer http://twitter.com/kauer389 GPG fingerprint: 3C41 82BE A9E7 99A1 B931 5AE7 7638 0147 2C3C 2AC4 Old fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882