Thanks, I wish I could have found this info on the net...

On 4/9/2015 3:22 AM, Russell Brown wrote:
> Quoth John Thornton.....
>> I went to the bios and turned off the Ethernet on the
>> motherboard. I still don't have a connection to the LAN from that
>> computer. Any clues as to what I need to do?
> I know you're sorted but for reference....
>
> Wheezy remembers the MAC address for NICs and which eth it's allocated
> to.
>
> Look at /etc/udev/rules.d/70-persistent-net.rules and you'll see sommat
> like:
>
> # PCI device 0x8086:/sys/devices/pci0000:00/0000:00:19.0 (e1000e)
> SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", 
> ATTR{address}=="00:1a:6b:38:38:28", ATTR{dev_id}=="0x0", ATTR{type}=="1", 
> KERNEL=="eth*", NAME="eth0"
>
> If you plug in a different NIC, the MAC will be different and udev will
> allocate it to eth1 *even if eth0 no longer exists* because you've
> remove the NIC.
>
> Delete that file, reboot and the first NIC will be allocated to eth0.
>
> HTH
>


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