>
> My understanding was that the traffic is not charged to the IP but to
> the physical line and that line happens to have a static IP. There is
> only
> a subtle difference but it means that it does not matter who the Internet
> user is, or if they have ever connected to the internet using that ADSL
> line or not. It only matters what IP is assigned to that physical line
> and
> who rents that physical line.
>
> In theory I think that it is possible to get gigs of data on a line before
> any one connects to it. If the IP gets a DoS attack just after the line
> is installed then the line renter would pay for that data.

This is not the case as the route updates would tear down the ip route for
that node as the user dropped offline and the static ip would return to
the vast world of null until such time as the user logged in again.

the static IP is not tied to the physical line it is tied to the
username/password that is stored in the ISP database and passed back via
radius attributes when a user comes online by utalising a
Framed-IP-Address attribute.

as opposed to a dynamic IP where no IP is passed back via radius and so
the user gets one allocated from a pool that is associated with that NAS.
(the ISP may also be doing a pseduo dynamic IP but thats another story
again and works in a similar way to static IP's from Telecoms perspective
- just happens all customers have one)

This allows one with a static IP to roam to the other end of the country
and login with their username/password and have the static IP follow them.

The most that would happen is that the ISP has a static route in place
pointint to their Telecom CAR for your IP and when you drop offline the
packets his the CAR and then drop into the big /dev/null void.

Dynamic routing is fun !.

-- 
Steve.
-- 
This message is part of the NZ ADSL mailing list. 
see http://unixathome.org/adsl/ for archives, FAQ, 
and various documents. 
To unsubscribe: send mail to majordomo@lists.unixathome.org 
with "unsubscribe adsl" in the body of the message