[Bug 1565083] Re: 16.04 beta2, cannot override udev network interface name in VM

[Marc Na]

Oh, so it's a Debian-flavor specific issue.
This said, the README mentions only two methods (.rules or kernel parameter), whereas I'm using the third one mentioned by the freedesktop.org page (.link configuration).
Would it be possible to leave a note in the systemd.link(5) manpage instead, where it's more likely to be RTFM'd?

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Title:
  16.04 beta2, cannot override udev network interface name in VM

Status in systemd package in Ubuntu:
  Invalid

Bug description:
  Hello,

  I just cannot seem to override a network interface name on a Ubuntu Server 16.04 beta 2 fresh install.
  Reproduce steps were tried on both VirtualBox 4 and VMware Player 7.

  (Sadly, despite updating apt, I could not find apport in the
  repositories, so please bear with me)

  --N.B.: following is not an apport output--
  DistroRelease: Ubuntu 16.04
  Package: systemd 229-3ubuntu1
  Package: udev 229-3ubuntu1
  Uname: Linux ubuntu 4.4.0-15-generic #31-Ubuntu SMP Fri Mar 18 19:08:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  Architecture: amd64
  InstallationMedia: ubuntu-16.04-beta2-server-amd64.iso, checksummed (20160323)
  ProcEnviron:
   LANG=en_US.UTF-8
  UpgradeStatus: fresh install
  --

  Steps to Reproduce:
  1. Setup VM with a network card (VirtualBox: Intel Pro/1000 MT Server; VMware Player: E1000 or (hand-edited vmx) vmxnet3
  2. Install
  3. Upgrade
  4. Login
  5. Run "networkctl" and note interface name
  6. Run "/sbin/udevadm test /sys/class/net/ens160" replacing ens160 with the interface name
  ID_PATH=pci-0000:03:00.0
  ID_NET_LINK_FILE=/lib/systemd/network/99-default.link
  7. Create an override rule : "sudo vi /etc/systemd/50-eth0.link"  -- see systemd.link(5) -- with these contents:
  [Match]
  Path=pci-0000:03:00.0*

  [Link]
  Name=eth0
  MACAddressPolicy=persistent

  8. Run again "/sbin/udevadm test /sys/class/net/ens160"
  ID_NET_LINK_FILE=/etc/systemd/network/50-eth0.link
  9. Run "sudo reboot"
  10. Login and run "networkctl"

  Expected result:
  interface name is now eth0

  Actual Result:
  No change in interface name.

  Other thoughts:
  - journalctl does not provide extra info, just that the interface has been renamed to the persistent name as usual.

  - /etc/udev/rules.d/ is empty.

  - network-manager package is not installed

  - Have also tried adding a blank "NamePolicy=" line just under [Link]

  - Have tried with Name=ethfoo to avoid potential conflicts; no dice

  - Of course, you can disable the new names by adding net.ifnames=0
  kernel boot option to grub; it works (but then you don't assign an
  name to a matching device).

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