eth0 in dmesg became eth1 from kernel

eth0 in dmesg became eth1 from kernel

[Aras Vaichas]

Hello,

I'm working on a Linux live filesystem CD and I've come across a very strange
problem. My system is based on a Debian system with a custom 2.6.17 kernel.

dmesg reported the SKY2 network adapter as eth0, but it became eth1 in
/sys/class/net. /sys/class/net doesn't show any eth0 whatsoever.

The laptop I was using also had a firewire adapter, but I'm not loading any
firewire modules at all. If I boot a Knoppix CD on this system, the ethernet
becomes eth0 and the firewire becomes eth1.

On my live filesystem, if I run udevmonitor followed by udevtrigger, I see that
the kernel is sending a UEVENT for eth1 only - even though dmesg say that the
only network device is eth0.

Why is this happening? Is there anything I can do about this in udev?

I can probably handle this with iftab and ifrename, but I'd like to know if
there is a udev way.

regards,

Aras Vaichas


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Re: eth0 in dmesg became eth1 from kernel

[Martin Hicks]

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On Fri, Oct 06, 2006 at 04:13:04PM +1000, Aras Vaichas wrote:
> Hello,
> 
> I'm working on a Linux live filesystem CD and I've come across a very strange
> problem. My system is based on a Debian system with a custom 2.6.17 kernel.
> 

Debian keeps track of MAC addresses and uses udev to keep the names
persistent.  Take a look at:

/etc/udev/rules.d/z25_persistent-net.rules

mh

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Martin Hicks || mort@bork.org || PGP/GnuPG: 0x4C7F2BEE

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