尝试过一切;仍然“localhost”无法解析

Question

我有一台运行Yosemite（10.10.3）的iMac，我在其上安装了MAMP，Apache和MySQL启动正常但我无法访问任何页面，因为localhost没有解析。

我已经尝试了所有内容，执行了我发现的每个终端命令，刷新了任何可刷新，修改/删除/添加回我的hosts文件中的所有可能组合，重新启动，修改了Mac OS和MAMP上的ServerName变量httpd.conf文件和NOTHING修复了它。

现在，有趣的部分是 127.0.0.1 （：Mac OS Apache为80或WAMP为8888）结算，我得到着名的“它的作品！”如果我尝试 my-macs-name.local （：Mac OS Apache为80或WAMP为8888）。

我的主机文件如下所示：

##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost 
fe80::1%lo0 localhost

Mac OS Apache httpd.conf文件ServerName部分如下所示：

# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
ServerName localhost:80

WAMP是这样的：

# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
ServerName localhost:8888

Safari（或任何浏览器）返回：

ping到localhost返回：

ping: cannot resolve localhost: Unknown host

我已经浏览了Google向我指出的每一个Stack Overflow，博客，互联网教程，但仍然无法解决这个问题。任何帮助将受到高度赞赏。