How To Edit Linux Based NM Network Manager Connection Settings Without GUI
Just find the relevant file in /etc/NetworkManager/system-connections
sudo vi /etc/NetworkManager/system-connections/Wired\ connection\ 1
[802-3-ethernet]
duplex=full
mac-address=00:00:00:FE:FE:FE
[connection]
id=Wired connection 1
type=802-3-ethernet
timestamp=1532403341
[ipv6]
method=ignore
[ipv4]
method=manual
dns=192.168.1.1;
address1=192.168.1.89/24,192.168.1.1
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