[systemd-devel] RFC: Predictable Network Interface Names

[Lennart Poettering]

On Tue, 08.01.13 13:37, Holger Winkelmann (hw at travelping.com) wrote:

> 
> Hi,
> 
> > > I.e.   fe0/01 for fast Ethernet port in first slot with a multi port NIC.
> > 
> > Well, as these names show up in sysfs and hence in the file system they
> > can't really include slashes since that's not allowed in file
> > names. This is a general kernel limitation.
> 
> I know about limitations in Kernel and have seen some efforts in the past
> to avoid this. but generally I don't think it would be successful to go down
> the road to allow slashes.
>  
> > For your example the new code would pick a name of "enp0s0d0", i.e. for
> > pci bus 0, slot 0, and dev_id 0.
> 
> It would take some time to geht used for this names, anyway...
> In your link below I have seen "ID_NET_NAME_ONBOARD_LABEL=Ethernet
> Port 1"
> 
> can anybody explain where this label is being exposed to userland tools for
> display and management purposes?

These are udev properties. You can easily query them with libudev, or
from the command line:

udevadm info /sys/class/net/eno1

Lennart

-- 
Lennart Poettering - Red Hat, Inc.