小米路由器同一wifi局域网下，各主机无法ping连

小米路由器同一wifi局域网下，各主机无法ping连

使用的是小米路由器，死活ping不通同网的电脑：

Pinging 192.168.31.26 with 32 bytes of data:
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.
Reply from 192.168.31.139: Destination host unreachable.

需要将加密方式更改为WPA2个人版：

就可以ping 通了：

Reply from 192.168.31.26: bytes=32 time=64ms TTL=64
Reply from 192.168.31.26: bytes=32 time=80ms TTL=64
Reply from 192.168.31.26: bytes=32 time=5ms TTL=64
Reply from 192.168.31.26: bytes=32 time=126ms TTL=64
Reply from 192.168.31.26: bytes=32 time=21ms TTL=64
Reply from 192.168.31.26: bytes=32 time=56ms TTL=64
Reply from 192.168.31.26: bytes=32 time=1ms TTL=64
Reply from 192.168.31.26: bytes=32 time=95ms TTL=64
Reply from 192.168.31.26: bytes=32 time=10ms TTL=64
Reply from 192.168.31.26: bytes=32 time=123ms TTL=64

小米？？很奇怪啊！