mailing list archives
Re: IPv6 end user addressing
From: Matthew Moyle-Croft <mmc () internode com au>
Date: Tue, 9 Aug 2011 00:42:12 +0000
From someone who's actually done this.
- Our customer base is primarily PPP connected broadband users (variety of technologies, mostly ADSL).
- We do a DYNAMIC /64 on the PPP interface so that people who terminate directly on a PC can get IPv6 without DHCPv6 PD.
- In addition for the subnet assigned via DHCPv6 Prefix delegation which is STATIC as that's what customers have been
In our trial phase we did /60s to customers - this worked just fine. I don't recall anyone actually saying "I need
more". (The /60 was the first nibble boundary and it allowed us to do some dumb things for allocation which didn't
compromise the allocation strategy later).
In production we've chosen a more conventional /56. At some point it becomes a little arbitrary. Our feeling is that
at the point your have 256 /64s in production then ADSL is probably NOT what you need or want as a technology so we can
do things differently for ethernet connected customers.
We're getting there with support for customers bringing their own PI space.
(For an idea of scale - we're tiny globally, but have around 250k customers across mainly Australia. We run our own
global dualstack network).
On 06/08/2011, at 1:47 AM, Brian Mengel wrote:
In reviewing IPv6 end user allocation policies, I can find little
agreement on what prefix length is appropriate for residential end
users. /64 and /56 seem to be the favorite candidates, with /56 being
I am most curious as to why a /60 prefix is not considered when trying
to address this problem. It provides 16 /64 subnetworks, which seems
like an adequate amount for an end user.
Does anyone have opinions on the BCP for end user addressing in IPv6?
Peering Manager and Team Lead - Commercial and DSLAMs
Level 5, 150 Grenfell Street, Adelaide, SA 5000 Australia
Email: mmc () internode com au<mailto:mmc () internode com au> Web: http://www.on.net<http://www.on.net/>
Direct: +61-8-8228-2909 Mobile: +61-419-900-366
Reception: +61-8-8228-2999 Fax: +61-8-8235-6909
Re: IPv6 end user addressing Doug Barton (Aug 05)
Re: IPv6 end user addressing William Herrin (Aug 06)
Re: IPv6 end user addressing Matthew Moyle-Croft (Aug 09)
Re: IPv6 end user addressing Mohacsi Janos (Aug 09)