很多网上提供的屏蔽某域名的方法都是把该域名指向127.0.0.1，为什么不指向0.0.0.0？如果本机上运行着web server的话，前者有可能产生问题吧？

[skydiver]

[Tang]

你可以用0.0.0.1或者::1哦

[skydiver]

@Tang ::1还是指向本机的 哈哈

[regent]

这个东西还这么复杂啊……

[likexian]

curl -v 0.0.0.0
* About to connect() to 0.0.0.0 port 80 (#0)
* Trying 0.0.0.0... connected
* Connected to 0.0.0.0 (0.0.0.0) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.19.7 (i486-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: 0.0.0.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Wed, 19 Sep 2012 05:31:27 GMT
< Server: Apache/2.2.14 (Ubuntu)
< Last-Modified: Thu, 20 Oct 2011 02:19:35 GMT
< ETag: "1214f3-0-4afb1967808ed"
< Accept-Ranges: bytes
< Content-Length: 0
< Vary: Accept-Encoding
< Content-Type: text/html
<
* Connection #0 to host 0.0.0.0 left intact
* Closing connection #0

[skydiver]

@likexian 貌似在linux里0.0.0.0是本机