PROXMOX - Overriding network device names

You can manually assign a name to a particular network device using a custom systemd.link file. This overrides the name that would be assigned according to the latest network device naming scheme. This way, you can avoid naming changes due to kernel updates, driver updates or newer versions of the naming scheme.

Custom link files should be placed in /etc/systemd/network/ and named <n>-<id>.link, where n is a priority smaller than 99 and id is some identifier. A link file has two sections: [Match] determines which interfaces the file will apply to; [Link] determines how these interfaces should be configured, including their naming.

To assign a name to a particular network device, you need a way to uniquely and permanently identify that device in the [Match] section. One possibility is to match the device’s MAC address using the MACAddress option, as it is unlikely to change. Then, you can assign a name using the Name option in the [Link] section.

For example, to assign the name enwan0 to the device with MAC address aa:bb:cc:dd:ee:ff, create a file /etc/systemd/network/10-eno1.link with the following contents:

Do not forget to adjust /etc/network/interfaces to use the new name. You need to reboot the node for the change to take effect.