Linux · Network Configuration

You cat /etc/resolv.conf and the only nameserver is 127.0.0.53. Why is your real DNS server not listed there, and how do you find it?

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More in Network Configuration

You edit /etc/network/interfaces on Debian to give your Ethernet card a static IP, but NetworkManager keeps overriding it. What is the underlying rule you violated?

On a headless server you have no GNOME dialogs. Which NetworkManager tools let you configure it, and what is the difference between them?

In the NetworkManager GUI, what single field decides whether an interface gets its address from DHCP versus a static address you type in?

NetworkManager has to coexist with the legacy config systems of many distros. What mechanism lets it do that, and which storage format is now the default?

A Wi-Fi password you saved is now on disk somewhere. Where NetworkManager writes it depends on the distribution — where does Fedora put it versus Ubuntu?

You want your Linux laptop's Wi-Fi card to act as a hotspot for other devices while it gets internet from Ethernet. What hardware-level condition can block this?

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