Resetting Your IP With Comcast

I have Comcast High-Speed Internet and need to change my IP. I have tried doing ipconfig/release and then ipconfig/renew (or vice versa, can't remember), then resetting modem and router without any change in the IP. Hopefully I won't have to call them.

P.S. - I don't mean to be a dick, but if you're just going to reply and say "why do you want to change your IP?" then don't respond at all. It's simply out of curiosity.

Most amazing jew boots

Originally Posted by packrat

The only way you can change your IP address with Comcast is if you use a different modem. IP addresses in Comcast's networks are defined by the MAC addresses of the modem.

(Just as an fyi, you cannot affect your network's connection to the internet with ipconfig commands. They only affect your computer's connection to the home network.)

And I suppose there is no way to change your modem's MAC address?

Thanks for the response packrat.

There's nowhere I can't reach.

Originally Posted by packrat

You'd have to do some drastic things, like physically changing the hardware, or installing different firmware on the device.

How about reinstalling the firmware on the modem... is that difficult?

How ya doing, buddy?

Originally Posted by packrat

"Reinstalling" the firmware wouldn't do anything. You would have to have custom firmware specifically hacked to achieve what you want. And on top of that, I believe it may violate Comcast's Terms of Use. (they don't like people altering their modems, and potentially working around bandwidth caps that they have set in place)

Just buy a cheap used modem from someone in your area on craigslist. Its a lot easier.

Does Comcast require you to have a Comcast provided/sponsored modem? I know this is a question that I should be asking Comcast... but unfortunately I'm renting and do not know all the information on the Comcast account.

I am a dolphin, do you want me on your body?

Originally Posted by packrat

Odd.
Are you behind a router, or is your computer directly connected to the modem.

I know this question wasn't directed toward me... but we probably have 5-6 computers connected to our router in the house im renting a room in, connected to a wireless router, then to modem (obviously). Will this method still work for me?

I was speaking idiomatically.

Originally Posted by packrat

Dude, the most drastic thing k_tak is suggesting is to reboot your computer! Just try it for god's sake.

I tried lots of things before posting here... rebooting was one of the first things.

What kind of toxic man-thing is happening now?