Better late then never

So, I discovered that when Rogers cycles my IP address it stays in the same subnet, (x.x.x.*), it will auto cycle my ip address sometimes, so thats rather annoying for DNS purposes. But theres a way to exploit that to my own gain. Rogers auto-cycles when your MAC address (think of it as a serial number for your router/pc) changes. With most routers, you can assign/fake a new MAC. This lets me auto cycle ip address through the subnet that rogers has me in.
Basically, what this comes down to is that if I have x.x.x.3 and rogers cycles my ip address and it becomes x.x.x.5 I know I’m in the same area as my old ip address, and can cycle my MAC address until I am given my old ip address. Yes, it’s random, but its better then updating my DNS records and waiting 2-3 days for the change to propogate out.
I know this works because it happened to me tonight, and I managed to gain my old IP back, after several cycles.
All in all, good shit.