So you’re a cable repair guy. you go to someone’s house and there’s obviously a network running. The cable modem is giving the customer problems, so you decide to try and replace it. In fact the tech support folks on the phone told the customer that there seems to be a recent history of the modem losing connection to their network when they’re setting up the appointment for you to come out. Only you don’t just replace it, and see if that solves the problem oh no. You take it upon yourself to figure out if maybe it the customer’s router by plugging the cable modem straight into one of the PC’s. When you realize that even then the modem is inconsistently connecting you go ahead and switch it out, and you leave.
Yes you leave, with the modem connected to one PC, set to only pass traffic to that MAC address. So when the customer goes to hook his network back up nothing works. The router won’t get an IP address, traffic won’t pass from the Internet through it and the customer has to spend quite a bit of time figuring out that he needs to clone the MAC address of his wife’s Mac to the router, then reset both the router, and the wireless access point before anything will work again.
Ugh! Sometimes Time Warner really drives me nuts.