求助:关于ping问题,xp系统

我是xp的系统,启用了ipv6后,得到自动产生的ipv6地址,ipconfig后得到:

Ethernet adapter 本地连接:

        Connection-specific DNS Suffix  . :

        IP Address. . . . . . . . . . . . : 192.168.0.158

        Subnet Mask . . . . . . . . . . . : 255.255.255.0

        IP Address. . . . . . . . . . . . : fe80::20c:29ff:fe2f:9e63%4

        Default Gateway . . . . . . . . . : 192.168.0.1

Tunnel adapter Teredo Tunneling Pseudo-Interface:

        Connection-specific DNS Suffix  . :

        IP Address. . . . . . . . . . . . : fe80::ffff:ffff:fffd%5

        Default Gateway . . . . . . . . . :

Tunnel adapter Automatic Tunneling Pseudo-Interface:

        Connection-specific DNS Suffix  . :

        IP Address. . . . . . . . . . . . : fe80::5efe:192.168.0.158%2

        Default Gateway . . . . . . . . . :

然后我用另一台也启动了ipv6的xp机器ping这台机器,返回:

C:\Debug>ping6 fe80::20c:29ff:fe2f:9e63%4

Pinging fe80::20c:29ff:fe2f:9e63%4

from fe80::20c:29ff:fe08:1d27%4 with 32 bytes of data:

Reply from fe80::20c:29ff:fe08:1d27%4: 无法到达目标地址。

Reply from fe80::20c:29ff:fe08:1d27%4: 无法到达目标地址。

Reply from fe80::20c:29ff:fe08:1d27%4: 无法到达目标地址。

Reply from fe80::20c:29ff:fe08:1d27%4: 无法到达目标地址。

Ping statistics for fe80::20c:29ff:fe2f:9e63%4:

    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

这是啥意思?

ping Teredo 地址成功:

C:\Debug>ping6 fe80::ffff:ffff:fffd%5

Pinging fe80::ffff:ffff:fffd%5

from fe80::ffff:ffff:fffd%5 with 32 bytes of data:

Reply from fe80::ffff:ffff:fffd%5: bytes=32 time<1ms

Reply from fe80::ffff:ffff:fffd%5: bytes=32 time<1ms

Reply from fe80::ffff:ffff:fffd%5: bytes=32 time<1ms

Reply from fe80::ffff:ffff:fffd%5: bytes=32 time<1ms

Ping statistics for fe80::ffff:ffff:fffd%5:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 0ms, Average = 0ms

这两台机器处在一个局域网内,那么,请问这两台机器彼此之间可以通过ipv6通信吗?自己写代码的话可以吧?

第一个ping说 “无法到达目标地址”是啥意思?