[Bug 1922266] [NEW] eth0 interface name change fails on Pi 3/3+

[Dave Jones]

Public bug reported:

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.

** Affects: ubuntu-meta (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1922266

Title:
  eth0 interface name change fails on Pi 3/3+

Status in ubuntu-meta package in Ubuntu:
  New

Bug description:
  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.

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