[Bug 1320916] Re: NICs being mapped with strange names that make no sense

[Romano Giannetti]

I do not have biosdevname installed, but I can't anymore create virtual
interfaces. Issuing

     sudo iw dev wlan0 interface add wlan1 type station

will result in a message

     kernel: [31130.438726] systemd-udevd[24264]: renamed network
interface wlan1 to rename4

...and rename4 is not recognized as a wifi interface at all. Any help?
What's happening?

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to udev in Ubuntu.
https://bugs.launchpad.net/bugs/1320916

Title:
  NICs being mapped with strange names that make no sense

Status in udev package in Ubuntu:
  Confirmed

Bug description:
  There was a time when ethernet devices were ethX, and it was a happy
  time.

  Then things moved to udev, device mapper and you never know WHAT your
  ethernet device is going to be called.

  But lately, things have turned for the strange... udev has a habit,
  apparently (or device mapper perhaps, not sure what's generating the
  actual device names) of calling ethernet devces things like
  "renameX"... what the heck is a "rename"??  it's not an em, or eth, or
  wlan or whatever.

  Here's an example from a recent server certification:
  ---------------------------[ Devices found by udev ]----------------------------
  Category: NETWORK
  Interface: em1
  Product: NC362i Integrated Dual Port BL-c Gigabit Server Adapter
  Vendor: Intel Corporation
  Driver: igb (ver: 5.0.5-k)
  Path: /devices/pci0000:00/0000:00:03.0/0000:03:00.0

  Category: NETWORK
  Interface: rename3
  Product: NC362i Integrated Dual Port BL-c Gigabit Server Adapter
  Vendor: Intel Corporation
  Driver: igb (ver: 5.0.5-k)
  Path: /devices/pci0000:00/0000:00:03.0/0000:03:00.1

  Category: NETWORK
  Interface: em3
  Product: NC543i 1-port 4x QDR IB/Flex-10 10Gb Adapter
  Vendor: Mellanox Technologies
  Driver: mlx4_core (ver: 2.2-1)
  Path: /devices/pci0000:00/0000:00:07.0/0000:02:00.0

  This system has two things, a dual port gigabit adapter, and a 1 port
  10GbE adapter.

  It calls the second interface on the dual port gigabit adapter
  rename3.

  What the heck is a  rename3?

  I have seen this now on more than a couple servers with multiple
  network devices from different OEMs.

  Attached is dmesg from that machine.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1320916/+subscriptions