I asked our PMs about this after some earlier discussions, and for many BRAS deployments of IPv6, this restriction is a natural side-effect of normal and desired behavior.
I do not know what the feature name is as used in product.
(I worry more about what it does, not what it is called in the marketting literature. Sorry.)

Yours,
Joel

On 7/13/2011 12:07 PM, Mikael Abrahamsson wrote:
On Wed, 13 Jul 2011, Joel M. Halpern wrote:

For ISPs providing bridged residential services, the ISP normally
operates on the basis that it gets registration information from all
the devices in the home. Thus, it does not need to generate ND
solicitations.

Is there some description of this behaviour somewhere, what would this
feature be called that I can ask vendors if they have in their equipment?

Just to be sure, we're now saying that reachability won't be had from
the outside unless the internal device keeps itself "registered" with
the ISP router.

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