network connection using nmcli

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Problem

There is no network connection and device is not managed

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$ nmcli device status
DEVICE  TYPE      STATE      CONNECTION
eth0    ethernet  unmanaged  --
lo      loopback  unmanaged  --

image-20220401011509900

solution

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sudo nmcli networking on

Then, eth0 is connected

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$ nmcli device status
DEVICE  TYPE      STATE      CONNECTION
eth0    ethernet  connected  Ethernet connection 1
lo      loopback  unmanaged  --

image-20220401011543866