Answers inline
On Nov 9, 2009, at 12:09 PM, Manfredi, Albert E wrote:
-----Original Message-----
From: Mikael Abrahamsson [mailto:swm...@swm.pp.se]
Here is the crux of my not understanding the problem:
And no, I haven't seen any residential rollout
plan where
IPv6 would be provisioned in the static way you describe,
DHCPv6-PD seems
to be the most popular method seen in discussion.
Does not the ISP control, own, and distribute the "residential
gateway"? If yes, then the DHCP conducted within the broadcast
domain part of the network, i.e. the "last mile" part *outside*
customer premises, should be able to ensure uniqueness of the EUI
and consequently the IPv6 address of each residential gateway WAN
side, no? So that DHCP or whatever method of assigning IPv6 WAN side
addresses should be safe.
Traditionally, they don't. Some providers can provide a gateway but
it's far cheaper to go to your local electronics store and get a home
router with wireless than to "rent" one from a service provider.
You'll find a SP-provided gateway more often with business services
than residential services.
For that matter, one could use the client identifier option, and the
ISP could hard-code the client ID in each of their residential
gateways, before distributing these to customer premises.
Why would ISP not own and control the residential gateway?
The just don't.
We received our ADSL "modem" in the mail, from Verizon. It is a NAT,
and the WAN side is under their control entirely. Is this not
standard practice among ISPs?
Not for most ISPs in the US. I would say the Verizon example is more
the exception than the rule. I've only ever used my own store-bought
gateway. For most cable providers in the US you don't even need to
use their provided modem, you can bring your own and use it.
Phil
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