[CentOS] Forcing ifcfg-eth0 to use the same nic in multi nic machine

[Johnny Hughes]

Doug Coats wrote:
>> As far as I understand networking, if you only have 1 MAC, you only
>> have 1 NIC.  You might have 2 connectors, but that seems really
>> strange.  It seems like this is some sort of undefined behavior.  I
>> think that having only 1 MAC really *IS* an issue.
> 
> I have used these boards(I have 6 of the same motherboard) for about 3
> years now with no problems, until I upgraded the OS this summer from
> Fedora Core 4 to CentOS 5.  With every windows install and Linux
> install on these mother boards they report two separate nics that can
> both be configured and active at the same time with the same MAC
> address.
> 
> Doug

How can 2 nics from different companies have the same mac address ....

I don't think that is possible.

each card needs a separate MAC address, at least the way I understand
networking.

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