Ubuntu 22.04 check dns server

The two top-scoring answers, and both assume that network-manager is in control.

Nslookup linux

Nslookup linux

Ifconfig dns linux

Linux dns server

Dns lookup

Linux dns settings

Which it is - on desktop machines most of the time at least. But the fuller answer is that sometimes network-manager is not in control. E.g. messes with directly.

So: First check if 127.0.0.1/localhost is used. This could be done with :

Now you know that we are using localhost.

Go ahead with one of the popular answers.

Configure dns in linux command line

I like:

But if 127.0.0.1/localhost is not used, then 's and 's output will be misleading:

Here, is correct and 's information is misleading. In reality addresses local to the environment I've VPN-ed into are resolved correctly.

All of which Google's DNS doesn't know about.

This is because after connecting to a VPN with , it puts a line in so it looks like: