Tukukkk

on my computer(windows 10), the dns server that ping.exe use is different from the dns server nslookup use. i set 192.168.123.1 to be my computer's dns server, which is my router. so nslookup uses it as the dns server:

PS C:Userspeter> nslookup.exe fm.zju.edu.cn

server:  RT-N14U.lan

Address:  192.168.123.1



name:    fm.zju.edu.cn

Address:  10.214.0.99

this ip address ic correct, which is school-internal ip.

but the ping result is different:

PS C:Userspeter> ipconfig.exe /flushdns



Windows IP Configuration



Successfully flushed the DNS Resolver Cache.

PS C:Userspeter> ping fm.zju.edu.cn



Pinging fm.zju.edu.cn [210.32.157.99] with 32 bytes of data:

then i use wireshark to find out that ping.exe send dns request to another dns server 114.114.114.114. i used to use this dns server, but i doesn't use it for about a month.

i reset the network settings, but the ping.exe still use 114.114.114.114 as its dns server.

i don't know how to solve this problem.

i don't know why this problem disappear today, what i did yesterday was:

change the mtu value of network card from 1500 to 1280 and many other things.

if this problem never appears again, just let it pass.