Re: What determines the order of ethernet devices?

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Gilboa Davara wrote:

>> One issue that occurred when going from FC-5 to FC-6 on my desktop
>> was that the order of the 3 ethernet devices changed.
>> This didn't really cause a problem;
>> I simply permuted the files
>> /etc/sysconfig/network-scripts/ifcfg-eth[012]. But I wondered:
>> 1. What caused this change?
> 
> AFAICS the order in which kudzu scanned the PCI bus dictates the order
> of ethernet devices in ifcfg-ethX.

In this case kudzu must scan the PCI bus in a strange order,
as the card which was given the eth0 slot appears as 00.09.0 on the bus
(according to lspci) while the card given the eth1 slot
appears as 00.07.0.

> 
>> 2. Is there any simple way of ensuring that a given device is say eth0?
> 
> No that I'm aware of.

Actually, I found the advice to give the MAC address
as HWADDRESS= in ifcfg-eth? did the job,
as I should have said before.


-- 
Timothy Murphy  
e-mail (<80k only): tim /at/ birdsnest.maths.tcd.ie
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland


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