Last week, I subscribed to a new ISP ( Free ), to benefit from discounts as well as better hardware, gateway and set-top-box.
My new ISP and the incumbent operator were fast enough to take over my DSL line not even 2 days after my subscription. Though, Free did not bother sending the new equipment yet, I was left with the gateway from my previous ISP which was not connecting anymore.
To get back online, I had to pull out a few tricks I used to do a while back when I was at Mandriva with the only legacy modem I got: a green Speedtouch USB (nicknamed the "manta ray").