Re: doubleclick lives in my
Because 0.0.0.0 means unroutable, and the system won't try to do anything with it unless it has a bug. If I use 127.0.0.1, it will start trying to make connections to services on my machine. If I have a webserver running, that will add junk to my logs and return random 404s from that. Even if I don't have that, there will be some overhead as the browser/application initiates TCP connections that aren't going to work. Why bother? As for 127.0.1.2, I'm not sure why that was suggested. Yes, it's not localhost so it avoids the TCP overhead and local service problems, but it doesn't have any intrinsic benefits (as far as I know) over any other 127.* address, and is less likely to be checked than a proper unroutable 0.0.0.0.
Biting the hand that feeds IT
