nmtui
Articles covering nmtui.
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Configure Ubuntu 26.04 Networking: Static IP, nmtui and Two NICs
Choose the active network manager, configure a static address and handle routing and DNS when Ubuntu 26.04 has two interfaces.
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Set a Static IP on Rocky Linux 9 with nmtui and nmcli
Identify the NetworkManager connection, set a static address and DNS, and prepare a recovery path before changing a remote connection.