[Bug 1541678] [NEW] if-post-down.d/vlan and if-pre-up.d/vlan should support en* interfaces

[Haw Loeung]

Public bug reported:

Starting with udev v197, systems now use predictable network interface
names by default[1]. Unfortunately on my system running Xenial alpha2,
it seems vlan doesn't support the generated interface names:

| ubuntu at lagertha:/var/log$ dmesg | grep rename
| [    5.101700] igb 0000:01:00.0 enp1s0: renamed from eth0
| [    5.502268] igb 0000:02:00.0 enp2s0: renamed from eth1
| [    5.526634] igb 0000:04:00.0 enp4s0: renamed from eth3
| [    5.550056] igb 0000:03:00.0 enp3s0: renamed from eth2

Looking at the if-pre-up and if-post-down scripts, it seems it's missing
there and only has:

|  eth*.0*|bond*.0*|wlan*.0*|em*.0*|p[0-9]*.0*)
| ...  ;;
|  eth*.*|bond*.*|wlan*.*|em*.*|p[0-9]*.*)
| ...  ;;

"""
What precisely has changed in v197?

The following different naming schemes for network interfaces are now
supported by udev natively:

1. Names incorporating Firmware/BIOS provided index numbers for on-board devices (example: eno1)
2. Names incorporating Firmware/BIOS provided PCI Express hotplug slot index numbers (example: ens1)
3. Names incorporating physical/geographical location of the connector of the hardware (example: enp2s0)
4. Names incorporating the interfaces's MAC address (example: enx78e7d1ea46da)
5. Classic, unpredictable kernel-native ethX naming (example: eth0)
"""

Here's the package versions:

| ubuntu at lagertha:/var/log$ apt-cache policy udev
| udev:
|   Installed: 228-4ubuntu2
|   Candidate: 228-5ubuntu1
|   Version table:
|      228-5ubuntu1 500
|         500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
|  *** 228-4ubuntu2 100
|         100 /var/lib/dpkg/status
| ubuntu at lagertha:/var/log$ apt-cache policy vlan
| vlan:
|   Installed: 1.9-3.2ubuntu1
|   Candidate: 1.9-3.2ubuntu1
|   Version table:
|  *** 1.9-3.2ubuntu1 500
|         500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
|         100 /var/lib/dpkg/status

[1]http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

** Affects: vlan (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: xenial

** Tags added: xenial

** Description changed:

  Starting with udev v197, systems now use predictable network interface
  names by default. Unfortunately on my system running Xenial alpha2, it
  seems vlan doesn't support the generated interface names:
  
  | ubuntu at lagertha:/var/log$ dmesg | grep rename
  | [    5.101700] igb 0000:01:00.0 enp1s0: renamed from eth0
  | [    5.502268] igb 0000:02:00.0 enp2s0: renamed from eth1
  | [    5.526634] igb 0000:04:00.0 enp4s0: renamed from eth3
  | [    5.550056] igb 0000:03:00.0 enp3s0: renamed from eth2
  
  Looking at the if-pre-up and if-post-down scripts, it seems it's missing
  there and only has:
  
  |  eth*.0*|bond*.0*|wlan*.0*|em*.0*|p[0-9]*.0*)
  | ...  ;;
  |  eth*.*|bond*.*|wlan*.*|em*.*|p[0-9]*.*)
  | ...  ;;
+ 
+ Here's the package versions:
+ 
+ | ubuntu at lagertha:/var/log$ apt-cache policy udev
+ | udev:
+ |   Installed: 228-4ubuntu2
+ |   Candidate: 228-5ubuntu1
+ |   Version table:
+ |      228-5ubuntu1 500
+ |         500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
+ |  *** 228-4ubuntu2 100
+ |         100 /var/lib/dpkg/status
+ | ubuntu at lagertha:/var/log$ apt-cache policy vlan
+ | vlan:
+ |   Installed: 1.9-3.2ubuntu1
+ |   Candidate: 1.9-3.2ubuntu1
+ |   Version table:
+ |  *** 1.9-3.2ubuntu1 500
+ |         500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
+ |         100 /var/lib/dpkg/status

** Description changed:

  Starting with udev v197, systems now use predictable network interface
- names by default. Unfortunately on my system running Xenial alpha2, it
- seems vlan doesn't support the generated interface names:
+ names by default[1]. Unfortunately on my system running Xenial alpha2,
+ it seems vlan doesn't support the generated interface names:
  
  | ubuntu at lagertha:/var/log$ dmesg | grep rename
  | [    5.101700] igb 0000:01:00.0 enp1s0: renamed from eth0
  | [    5.502268] igb 0000:02:00.0 enp2s0: renamed from eth1
  | [    5.526634] igb 0000:04:00.0 enp4s0: renamed from eth3
  | [    5.550056] igb 0000:03:00.0 enp3s0: renamed from eth2
  
  Looking at the if-pre-up and if-post-down scripts, it seems it's missing
  there and only has:
  
  |  eth*.0*|bond*.0*|wlan*.0*|em*.0*|p[0-9]*.0*)
  | ...  ;;
  |  eth*.*|bond*.*|wlan*.*|em*.*|p[0-9]*.*)
  | ...  ;;
+ 
+ """
+ What precisely has changed in v197?
+ 
+ The following different naming schemes for network interfaces are now
+ supported by udev natively:
+ 
+ 1. Names incorporating Firmware/BIOS provided index numbers for on-board devices (example: eno1)
+ 2. Names incorporating Firmware/BIOS provided PCI Express hotplug slot index numbers (example: ens1)
+ 3. Names incorporating physical/geographical location of the connector of the hardware (example: enp2s0)
+ 4. Names incorporating the interfaces's MAC address (example: enx78e7d1ea46da)
+ 5. Classic, unpredictable kernel-native ethX naming (example: eth0)
+ """
  
  Here's the package versions:
  
  | ubuntu at lagertha:/var/log$ apt-cache policy udev
  | udev:
  |   Installed: 228-4ubuntu2
  |   Candidate: 228-5ubuntu1
  |   Version table:
  |      228-5ubuntu1 500
  |         500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
  |  *** 228-4ubuntu2 100
  |         100 /var/lib/dpkg/status
  | ubuntu at lagertha:/var/log$ apt-cache policy vlan
  | vlan:
  |   Installed: 1.9-3.2ubuntu1
  |   Candidate: 1.9-3.2ubuntu1
  |   Version table:
  |  *** 1.9-3.2ubuntu1 500
  |         500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
  |         100 /var/lib/dpkg/status
+ 
+ [1]http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

** Summary changed:

- if-post-down.d/vlan and if-pre-up.d/vlan should support enpXsY interfaces
+ if-post-down.d/vlan and if-pre-up.d/vlan should support en* interfaces

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https://bugs.launchpad.net/bugs/1541678

Title:
  if-post-down.d/vlan and if-pre-up.d/vlan should support en* interfaces

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