RE: [DNA] DNA link hints document

[Bernard Aboba <aboba@internaut.com>]

>  >       LAPTOP <-- PPP --> PHONE <---- GPRS ----> GGSN
>  >
>  > And the same is (obviously) true for UMTS as well...
>
> => The RAs are sent (at least according to the specs) but what you
> might be seeing is that the RA is only sent to the phone and is not
> forwarded to the laptop. So the laptop only sees a PPP connection.

There is still the question of how the LAPTOP gets the IPv6 prefix without
RA.  Since PPP IPv6CP standards don't specify this, I'm at a loss to
explain it.

> The situation might be different if instead of the phone you see
> a PCMCIA card inside the laptop. Or if you snoop the traffic arriving
> at the phone itself. I.e. when the PPP part is removed.

Well, there are driver models that emulate ethernet, and that translate
this to PPP over the wire.  But I think the question still stands...