wget下载https文件，服务器可以虚拟机中不行的问题

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'--2014-11-21 09:33:17--  https://gp1.wac.edgecastcdn.net/806614/photos/photos.500px.net/90241693/795b7a5900db5905631ebe7ff5aa141a5e0f59ce/3.jpg?v=6Resolving gp1.wac.edgecastcdn.net... 159.106.121.75, 37.61.54.158Connecting to gp1.wac.edgecastcdn.net|159.106.121.75|:443... failed: Connection timed out.Connecting to gp1.wac.edgecastcdn.net|37.61.54.158|:443... connected.

最后发现是DNS的问题，把域名改为ip就可以了。