Dual stack IPv6 for IPv4 depletion

Seth Mos seth.mos at dds.nl
Thu Jul 9 07:42:43 UTC 2015


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 at ics-il.net> 
Datum: 09-07-2015  04:03  (GMT+01:00) 
Aan: nanog at 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 at biplane.com.au> 
To: nanog at 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. 

-- 
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http://www.biplane.com.au/kauer 
http://twitter.com/kauer389 

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