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I'm trying to figure out how to restore the simple interface names in Ubuntu 16.04. I.e. enp3s0 renamed to eth0.

  • I have tried to modify the GRUB configuration. I have tried editing /etc/udev/rules.d/10-network.rules, but both methods did nothing for me. Help is greatly appreciated.

    /etc/udev/rules.d/10-network.rules: (I hid the mac address names.)

    SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="XX:XX:XX:XX:XX:XX″,KERNEL=="enp0s0″, NAME="eth0″
SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="XX:XX:XX:XX:XX:XX″,KERNEL=="wlx02c5c1866772″, NAME="wlan0″

  • And I changed this line in the GRUB configuration (/etc/default/grub) ...

    GRUB_CMDLINE_LINUX=""

    to look like this:

    GRUB_CMDLINE_LINUX="net.ifnames=1"
user.dz
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Faith Skater
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    Check this out https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/. Looks complicated indeed. – mikewhatever Jun 11 '16 at 21:26
  • Is this a virtualbox or real machine? If it is real what's the brand/model? Are you running in UEFI mode or BIOS legacy ? – user.dz Jun 17 '16 at 18:02

1 Answers1

2

Tested on VBox with Ubuntu 16.04, enp0s3 → eth0

Option 1:

  1. Override udev rule

    sudo ln -s /dev/null /etc/udev/rules.d/80-net-setup-link.rules

  2. Update RAMDisk

    sudo update-initramfs -u

Option 2:

  1. Create a systemd link file

    sudo vim /etc/systemd/network/10-eth.link

  2. Let's define name related to MAC: (There are many options, see the linked reference)

    [Match]
MACAddress=08:00:27:de:dd:4c

[Link]
Name=eth0

  3. Update RAMDisk

    sudo update-initramfs -u

Option 3:

  1. Add net.ifnames=0 to boot parameters

    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash net.ifnames=0"

  2. Update grub

    sudo update-grub

Reference: systemd: Predictable Network Interface Names, Thanks @mikewhatever .

poige
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user.dz
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    Option 2 appears to be the most resilient to upgrades because it only makes changes to the network devices you're concerned about. Option 1 and 3 both have side-effects that may change other devices/interfaces. However, I can't seem to get option 2 to work after a 14.04.3 to 16.04 upgrade. I may be missing a systemd service. `dmesg` lists the interfaces being renamed from ethX to enpXsY but not back again so I suspect a systemd service is needed to be enable for option2 to work. To be clear, I'm doing option 2 in isolation. Do you have any idea what service is required for option 2? – tudor -Reinstate Monica- Aug 15 '16 at 02:57
  • @tudor, I think this is the related `/lib/udev/rules.d/80-net-setup-link.rules`, seems systemd using a udev rule actually as explained here (`man systemd.link`) https://www.freedesktop.org/software/systemd/man/systemd.link.html . and the next seems also related for boot parameter option3: `/lib/udev/rules.d/73-usb-net-by-mac.rules` – user.dz Aug 15 '16 at 05:04
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    I've corrected Option 2 cause it doesn't work the way you thought it did. Try using different name, say, eth5 and you'll realise that `eth0` is just default name you get if you don't run `update-initramfs -u` – poige Mar 08 '19 at 08:09