My side is that the inside has a domain, internal DNS, DHCP server, all of these build in a virtual machine, use the version is VMware esxi 5.1, now I get after the IP and DNS client automatically open the web site is slow, appear, slowly, bit by bit, but the speed of download documents is normal, PING sites outside normal speed, then I put the DNS client into a gateway or outside DNS that open the web page is normal, the problem is that I can only use our internal DNS, if I don't need to exchange will not be able to use, consult everybody this is how to return a responsibility, how to solve this problem? I will do to let me use the internal DNS open web speed is normal, thank you!!!!!