That image is using systemd-networkd…
If you installed connman without uninstalling systemd-networkd there is probably a conflict…
You should be modifying /etc/systemd/network/eth0.network
That image is using systemd-networkd…
If you installed connman without uninstalling systemd-networkd there is probably a conflict…
You should be modifying /etc/systemd/network/eth0.network