[gentoo-user] udev: renaming eth0 to eth1 ???

Hi,

 unfortunately I had to change my motherboard (the replacement is 
 exactly the same model/type of the previous on).

 I booted the new board and: NO Lan. Eth0 dead it seems.

 It took me several long minutes before I found the following
 line in dmesg's log:

        udev: renaming etho to eth1

 There is only the onboard lan chip and no extra ethernet
 card is installed in the rig.

 Now I have eth1 and no eth0.
 Why does this happen? What is the reason for that?


 Thank you very much for any hint in advance!
 Have a nice weekend!
 Best regards,
 mcc