[hjeldin]

That's right, RFC is really clear about this. What i don't get is why most browsers solve the address to 127.0.0.1 since it's incorrect as for specs.

[shitlord]

Probably because of new developers. The last time I tried developing something in Django, it said it was running a webserver on 0.0.0.0:3000 or something similar. My classmate actually punched that into a browser, and it worked.

[firethief]

It's better if it doesn't work, so that they have to learn that it's very different from listening on the loopback. Accommodating the mistake encourages security holes.