Mailinglist Archive: opensuse (5130 mails)

[Anders Norrbring <lists@xxxxxxxxxxxx>]

Gaël Lams skrev:
> Hi all,
>
> I'm trying to undersand how udev and configuration of network
> interfaces work together. I read a few articles explaining how udev
> works, how to define rules, ... but, having a look at for instance a
> SuSe 9.3 configuration, there are two things that are not clear to me:
> 1 - I understand that they are udev rules defining the naming
> convention used to create something like
> ifcfg-eth-id-00:12:79:d5:9e:25  in /etc/sysconfig/network/ but I don't
> really understand how this file is "connected" to, for instance, eth0.
> It was my understanding that rules placed in /etc/udev/rules.d would
> have made the trick but I had a look there and see nothing related to
> eth0. Where/how is it define that what you see with an ifconfig
> corresponds to what is written in ifcfg-eth-id-00:12:79:d5:9e:25?
>
> 2 - I was my understanding that the use of udev would have allowed a
> really "slim" /dev folder but when I look at /dev, I still see the
> hundred of devices I used to see on kernel 2.4 - based distribution??
>
> I've no problem, just curiosity but any hint/explanation would be
> appreciated :-)

Hiya!
I'm not sure I see what you're looking for, but if it's the naming of 
the NIC's, it's made in /etc/udev/rules.d/30-net_persistent_names.rules

Like in one of my boxes, there's a line:

SUBSYSTEM=="net", ACTION=="add", SYSFS{address}=="00:0c:29:54:a6:44", 
IMPORT="/lib/udev/rename_netiface %k eth0"

That in short renames "00:0c:29:54:a6:44" to "eth0" for simple use.
--

Anders Norrbring
Norrbring Consulting