[systemd-bugs] [Bug 59610] Predictable interface names are inconsistent

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59610

--- Comment #2 from candyangel at electricjungle.org ---
Okay, very embarrased because it is supposed to say "systemd 197-4". I should
really have copy/pasted it rather than typing it out. My apologies!

I just tried both sets of steps again.. and it works as expected now. The only
thing I have done since coming across this bug is change from the dhcpcd
service to a bonding configuration controlled by netcfg.

Reverting this change, reinstates the behaviour I report. When using
'dhcpcd.service', interfaces are not given persistent names, but are when using
alternatives (netcfg in my case). Are you using dhcpcd.service and if not, is
it something you could easily test?

Also, is it possible there may be a race condition between the dhcpcd service
and the udev renaming which prevents the rename because dhcpcd has already took
control of the interface? I'm not familiar with the interaction between the two
so it is just a guess..

Thank you very much for testing it on your machine, that has definitely managed
to narrow down the problem!

I have included the output of 'udevadm monitor' that I get while the problem is
present:

$ udevadm monitor -k &
[1] 320

$ sudo rmmod ipw2200
KERNEL[63.438292] remove  
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/net/wlp6s2/queues/rx-0 (queues)
KERNEL[63.439512] remove  
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/net/wlp6s2/queues/tx-0 (queues)
KERNEL[63.440170] remove  
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/net/wlp6s2 (net)
KERNEL[63.446875] remove  
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/ieee80211/phy0/rfkill0 (rfkill)
KERNEL[63.453444] remove  
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/ieee80211/phy0 (ieee80211)
KERNEL[63.453583] remove   /bus/pci/drivers/ipw2200 (drivers)
KERNEL[63.453928] remove   /module/ipw2200 (module)
$ sudo modprobe ipw2200
KERNEL[68.076723] add      /module/ipw2200 (module)
KERNEL[68.079463] add     
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/firmware/0000:06:02.0 (firmware)
KERNEL[68.083738] remove  
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/firmware/0000:06:02.0 (firmware)
KERNEL[68.208959] add     
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/ieee80211/phy1 (ieee80211)
KERNEL[68.209723] add     
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/ieee80211/phy1/rfkill1 (rfkill)
KERNEL[68.210868] change  
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/ieee80211/phy1/rfkill1 (rfkill)
KERNEL[68.211121] add     
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/net/eth0 (net)
KERNEL[68.212443] add     
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/net/eth0/queues/rx-0 (queues)
KERNEL[68.212602] add     
/devices/pci0000:00/0000:00:1e.0/0000:06:02.0/net/eth0/queues/tx-0 (queues)
KERNEL[68.216810] add      /bus/pci/drivers/ipw2200 (drivers)

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