Vista's Ping tells you the IPv6 form of the local address.

Vista's new TCP/IP network protocol stack fully supports IPv6. Do you want to know the IPv6 format of the local address 127.0.0.1? Windows Vista ping can tell you that many users may feel that Windows Vista is not as fast as Windows XP. In fact, this is because of the TCP/IP connection problem. Microsoft may loosen the connection limit in future patches because of its The same brother Windows Server 2008 is 44 times faster than Windows Server 2003. So we have to believe in the future of Vista. Vista zone demo gives you the following: The implementation method is very simple, enter cmd in the Vista start menu and press Enter to open the command prompt. Enter ping localhost by default. The returned data packet will not be 127.0.0.1 but::1 . This is the local address of the Ipv6 format, as shown in Figure 1:

Figure 1
Why is this? This is defined by the Windows Vista hosts file. We will open the hosts file with Notepad in the C:\\Windows\\System32\\drivers\\etc\\ folder and you will see the following mapping relationship, as shown in Figure 2:

Figure 2
Detailed packet comparison:
C:\\Users\\Administrator>ping localhost
Pinging ooVista [::1] From::1 with 32 bytes of data:< Br>Re:From:1: Time<1ms from::1 Reply: Time<1ms from::1 Reply: Time<1ms from::1 Reply: Time<1ms
: Ping statistics for :1: Packets: Sent = 4, Received = 4, Lost = 0 (0% Lost), Estimated time of round trip (in milliseconds): Shortest = 0ms, Longest = 0ms, Average = 0ms
C:\\Users\\Administrator>ping 127.0.0.1
Ping 127.0.0.1 is having 32 bytes of data:
Reply from 127.0.0.1: Byte=32 Time<1ms TTL=128 Reply from 127.0.0.1: Byte=32 Time<1ms TTL=128 Reply from 127.0.0.1: Byte=32 Time<1ms TTL=128 Reply from 127.0.0.1: Byte=32 Time<1ms TTL=128
Ping Statistics for 127.0.0.1: Packet: Sent = 4, Received = 4, Lost = 0 (0% Lost) , estimated time of round trip (in milliseconds): shortest = 0ms, longest = 0ms, average = 0ms