eth0 interface name change fails on Pi 3/3+

[Dave Jones]

The netplan configuration in ubuntu-raspi-settings (and more widely, the network-config in the gadget used on the server images) fails to rename the internal ethernet interface on Pi 3B and 3B+ models from "en<mac-address>" to "eth0". In the netplan case this is because the driver matching logic doesn't handle space-separate driver matches (although the underlying networkd system does); in the cloud-init case it simply refuses to rename interfaces that aren't matched by full MAC address.

The intended fix is to stop attempting to do this via netplan or cloud-init, and simply handle this via a networkd .link file in ubuntu-raspi-settings. This will require an update to the relevant seeds as this package is currently only pulled into ubuntu-desktop-raspi, not ubuntu-server-raspi.

[Dave Jones (waveform)]

Seeds have now been updated:

https://code.launchpad.net/~waveform/ubuntu-seeds/+git/ubuntu-seeds/+merge/400932
https://code.launchpad.net/~waveform/ubuntu-seeds/+git/ubuntu-seeds/+merge/400933

And the meta package has been updated to incorporate these changes in 1.467

[Brian Murray (brian-murray)]

Is this ubuntu-settings task still necessary or should it be closed?

[Dave Jones (waveform)]

It's still necessary; I've got the changes ready but was holding off as there's possibly another fix that may need to go into this package too (LP: #1900904). But it's getting close to release so I'll push it anyway and deal with the other ticket separately.

[Dave Jones (waveform)]

Attaching debdiff; test builds are available from the following PPA:

https://launchpad.net/~waveform/+archive/ubuntu/ubuntu-settings/+packages

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-settings - 21.04.3

---------------
ubuntu-settings (21.04.3) hirsute; urgency=medium

  [ William 'jawn-smith' Wilson ]
  * Adding 99-gpio.rules udev rules for Raspberry Pi GPIO functionality
    (LP: #1923672)

  [ Dave Jones ]
  * Replace netplan eth0 renaming rules for raspi with networkd link unit
    (LP: #1922266)

 -- Dave Jones <email address hidden> Tue, 13 Apr 2021 23:02:42 +0100

[Łukasz Zemczak (sil2100)]

We have also pushed out a new livecd-rootfs that manually adds ubuntu-raspi-settings as a dependency of the server images (temporary before we switch to using seeds).

[Dave Jones (waveform)]

Targetting to Impish and Jammy as apparently ubuntu-settings lost the 21.04.3 changes in 21.10.1 (which was based on 21.04.2).

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-settings - 22.04.1

---------------
ubuntu-settings (22.04.1) jammy; urgency=medium

  * Reinstate changes from 21.04.3:
    - Adding 99-gpio.rules udev rules for Raspberry Pi GPIO functionality
      (LP: #1923672)
    - Replace netplan eth0 renaming rules for raspi with networkd link unit
      (LP: #1922266)
  * Override initramfs compression to lz4 to prevent OOM on 512MB platforms,
    and add a dependency on lz4 to d/control (LP: #1950214)
  * d/control: Correct spelling of raspberry

 -- Dave Jones <email address hidden> Wed, 15 Dec 2021 15:29:10 +0100

[Brian Murray (brian-murray)]

Ubuntu 21.10 (Impish Indri) has reached end of life, so this bug will not be fixed for that specific release.