Martin Husemann writes:
> > I have not verified that, but from what I have heard, that is what 
> > some companies use for ADSL connections here in Austria.
> 
> If I understood PPTP correctly you need an underlying working internet
> connection for it to work at all. So I don't see how PPTP alone (without
> PPoE below it) could work with a cable modem. Of course you could do
> PPoE and run PPTP on top of that (but *why* you should do that as an ISP
> I have no idea). Is PPTP able to run on an ATM transport directly?

The ISP could be leasing everyone a reserved IP address.  The PPTP link
would then bring up a global address.  It is certainly not a requirement
to use PPPoE on DSL, the plain "bridged ethernet" mode works fine.

-Andrew