wikiPredictable Network Interface Names
Starting with v197, systemd/udev under Linux automatically assigns predictable, stable network interface names for all local Ethernet, WLAN and WWAN interfaces. This is a deviation from the traditional interface naming scheme (eth0, eth1, wlan0, ...), which should solve previous problems.
Naming
Depending on the network type, the following prefixes (first two characters) are used:[1]
| prefix | network type |
|---|---|
| en | Ethernet |
| ib | InfiniBand |
| sl | Serial line IP (slip) |
| wl | Wireless local area network (WLAN) |
| ww | Wireless wide area network (WWAN) |
Ethernet (en*)
Ethernet network interface names are assigned as follows:[2]
- eno: Names containing the index numbers provided by firmware/BIOS for on-board devices, example: eno1 (eno = Onboard).
- ens: Names containing the PCI Express hotplug slot numbers provided by the firmware/BIOS, example: ens1 (ens = Slot).
- enp: Names containing the physical/geographical location of the hardware's port, example: enp2s0 (enp = Position).
- enx: Names containing the MAC address of the interface (example: enx78e7d1ea46da).
- eth: Classic unpredictable kernel-native ethX naming (example: eth0).
References
- ↑ manpage systemd.net-naming-scheme (www.freedesktop.org/software)
- ↑ Predictable Network Interface Names (systemd.io)
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Author: Werner Fischer Werner Fischer, working in the Knowledge Transfer team at Thomas-Krenn, completed his studies of Computer and Media Security at FH Hagenberg in Austria. He is a regular speaker at many conferences like LinuxTag, OSMC, OSDC, LinuxCon, and author for various IT magazines. In his spare time he enjoys playing the piano and training for a good result at the annual Linz marathon relay.
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