RHEL 7: systemd[1]: Failed to start LSB: Bring up/down networking.

[cah]

When I was updating the secondary network interface with a new IP address, the server gave me an issue when I tried to restart the network interfaces. The secondary network interface took over the first/primary interface and I could not log in any more. I had to remove the secondary interface and reboot to regain access.

I went online and found some people suggested disabling NetworkManager would solve the issue:

Code: Select all

systemctl stop NetworkManager
systemctl disable NetworkManager

I gave it a try and got:

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# systemctl stop NetworkManager
# systemctl disable NetworkManager
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.

After that, I was able to add the secondary network interface and bring it up as expected.

Not sure why NetworkManager would cause the issue.