Ping returns the following
C:\ Pinging DC1.domain.com [::1] from ::1 with 32 bytes of data:
Reply from ::1: time=1ms
Reply from ::1: time=2ms
Reply from ::1: time=1ms
Reply from ::1: time=3ms
Disable IPv6 and your problems go away. It’s usually not enough to uncheck it in the NIC properties. For best results use the registry to disable it.
Here are some step to solve the problem:
Open Register Editor, Start menu > Run > Type ‘regedit‘
Go to the following registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\tcpip6\Parameters\
Create registry value with DWORD type named it ‘DisabledComponents‘ set value to ‘000000ff‘
Restart your server
Ping returns “Reply from ::1: time
原文：http://549687.blog.51cto.com/539687/1901745