How to Change DNS of network from Terminal? [duplicate]
nmcli connection show --active to obtain active connection namenmcli connection edit double tab to list available connections and chose appropriate
nmcli> remove ipv4.dns nmcli> set ipv4.ignore-auto-dns yes nmcli> set ipv4.dns 8.8.8.8 8.8.4.4 (or other dns servers) nmcli> save nmcli> quit
nmcli connection down your_connection_namenmcli connection up your_connection_name