How to remove manual network interface settings
For hosts to achieve full-duplex operation following the uplink speed maintenance, speed and duplex configuration settings will need to be removed from your Self-Managed Server.
This article explains how to manually remove the connection parameters for hosts to full-duplex operation on Debian, Ubuntu, AlmaLinux and Windows Server operating systems.
Debian and Ubuntu (ifupdown)
pre-up ethtool -s eno1 speed 100 duplex full autoneg off must be removed from /etc/network/interfaces
Ubuntu (netplan)
The /etc/networkd-dispatcher/routable.d/10-enable-full-duplex file must be moved or deleted from that directory.
AlmaLinux
In the /etc/sysconfig/network-scripts/ifcfg-<network_interface> file the ETHTOOL_OPTS parameter must be set to
"", i.e. ETHTOOL_OPTS=""
Windows
- Open the Device Manager from the “Run” dialog box by running the devmgmt.msc.
- Double-click on Network adapters and double-click on the correct adapter.
- Click the Advanced tab.
- In the Property list, click Speed & Duplex.
- The Speed & Duplex setting must be set to “Auto Negotiation”.
- Click OK.
