Hi chih, the patch can't apply cleanly in nm-1.2, needs some porting.

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  WiFi being detected as ethernet when race condition on renaming for
  persistent name

Status in HWE Next:
Status in NetworkManager:
  Fix Released
Status in OEM Priority Project:
Status in OEM Priority Project xenial series:
Status in network-manager package in Ubuntu:

Bug description:
  Forwarded https://bugzilla.gnome.org/show_bug.cgi?id=775613

  Version: NetworkManager 1.4.2

  This bug happens after power-on with probability about 1/50.
  That means we need to reboot about 50 times to get into the buggy situation.
  "nmcli d" shows the device type is ethernet:

  DEVICE   TYPE      STATE        CONNECTION         
  wlp1s0   ethernet  unavailable  --
  lo       loopback  unmanaged    --                 

  The bug starts from a race condition. But it is not the root cause.
  I've also attach 2 logs. One is in good situation. Another is in bad 
  This log is generated by applying a "log patch" to network-manager 1.4.2 so 
we can see more stuff.

  In the bad situation. The bug starts with race condition. But the race 
condition is not the root cause. The race condition is:
   * During the renaming from "wlan0" to "wlp1s0". "wlan0" disappeared.
   * Inside the NM, it is still using "wlan0" in "_linktype_get_type()".
   * Since /sys/class/net/wlan0/uevent is disappeared. so the type matching 
failed in _linktype_get_type().
   * Also wifi_utils_is_wifi() failed to because /sys/class/net/wlan0 
   * And finally, devtype and kind are both NULL, so it returns 

  Later, wlan0 is renamed to wlp1s0, and it seems to me that the Object inherit 
the type so it is still type ethernet.
  But from the log, I saw _linktype_get_type() is called several times later 
and return the correct type (wifi). But just, "nmcli d" still shows type 

  I'm wondering if we are missing to update the type in the Object
  created after renaming and re-detecting the type.

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