[systemd-devel] udev too late renaming network interfaces

[Lennart Poettering]

On Tue, 13.05.14 04:52, Grant (emailgrant at gmail.com) wrote:

> I'm on Gentoo and when the system tries to start my network interfaces
> at boot, I get:
> 
> Cannot find device "enp0s20u2u1"
>  *   ERROR: interface enp0s20u2u1 does not exist
>  *   Ensure that you have loaded the correct kernel module for your hardware
>  * ERROR: net.enp0s20u2u1 failed to start
>  * Bringing up interface enp0s20u2u2
> Cannot find device "enp0s20u2u2"
>  *   ERROR: interface enp0s20u2u2 does not exist
>  *   Ensure that you have loaded the correct kernel module for your hardware
>  * ERROR: net.enp0s20u2u2 failed to start
> 
> It seems udev is taking too long to rename my USB ethernet interfaces
> from eth0 and eth1 to the above names.  Once the system is booted, I
> can start the interfaces just fine.  I do like the renaming
> functionality so I can plug any USB ethernet adapter into a particular
> USB port and it will work without changes so I'd rather not disable
> that.  Everything is built into the kernel, I'm not loading any
> modules.  I have 5 Dell XPS 13 systems and only one is exhibiting this
> problem.

Is your network configuration system waiting at all for network devices
to show up? If not, it's not really compatible who modern network
devices work, in particularly USB devices.

It needs to wait with libudev until the network devices it is interested
in have been reported initialized by udev.

Lennart

-- 
Lennart Poettering, Red Hat