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All domain names are resolved into private addresses

sxzhang23300
Beginner
Beginner

Our wan network has several network segments. There is a problem with the DNS resolution of a network segment. The dns address is assigned by dhcp as 114.114.114.114. But the client cannot access the public network. Use nslookup baidu.com. It was found that the address was resolved to 192.168.1.1. However, there is no 192.168.1.1 address in the LAN. I don't know why this problem occurs. Attached is the result of nslookUp. There is also the result of capturing packets on windows.

Some clients have this problem, some do not.

WLC:3504

Version:8.10.130

AP:2802i

 

16 REPLIES 16

If you manually set DNS to something else and it works, wireless isn't the issue.

 

Even if you don't have 192.168.1.1 on any device on your network, something is intercepting DNS requests and redirecting to that IP. This is common with DNS filters.

sxzhang23300
Beginner
Beginner

In addition, I attach our 3504 configuration. Please take a look

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