Lately, I've become enamored with the idea of IP spoofing. There are several ways of spoofing IPs when it comes to DoS attacks on a TCP/IP or UDP level, but I'm not looking for something like that. Just a simple way to get a page while sending a random IP address, on the HTTP level. (And no, I do not mean through proxies. I mean through a randomly-assigned IP address.)

I've been trying to do this with PHP using the $_SERVER['REMOTE_ADDR'] variable, but, as of yet, I have had no luck. Is anybody familiar with this idea or how I would go about properly programming it?