wget下载https文件，服务器可以虚拟机中不行的问题

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用wget下载一个图片资源（https协议），在服务器上可以，但在本机的虚拟机中卡在下面这里了:

[root@localhost ~]# wget 'https://gp1.wac.edgecastcdn.net/806614/photos/photos.500px.net/90241693/795b7a5900db5905631ebe7ff5aa141a5e0f59ce/3.jpg?v=6'

---- ::--  https://gp1.wac.edgecastcdn.net/806614/photos/photos.500px.net/90241693/795b7a5900db5905631ebe7ff5aa141a5e0f59ce/3.jpg?v=6

Resolving gp1.wac.edgecastcdn.net... 159.106.121.75, 37.61.54.158

Connecting to gp1.wac.edgecastcdn.net|159.106.121.75|:... failed: Connection timed out.

Connecting to gp1.wac.edgecastcdn.net|37.61.54.158|:... connected.

最后发现是DNS的问题，把域名改为IP就可以了。