From: alexias@nospam.mail   
      
   Petri Kaukasoina  wrote:   
   > Aelius Gallus   wrote:   
   >>Petri Kaukasoina  wrote:   
   >>> Aelius Gallus   wrote:   
   >>>>Every time I start Slackware, I have to get its IP address using the   
   >>>>dhclient or dhcpcd command with eth2 as a NIC number; it was eth0 before,   
   >>>>but this is not a problem. How can I correct this situation?   
   >>>   
   >>> rm /etc/udev/rules.d/70-persistent-net.rules   
   >>   
   >>Removed the file, and after restart, eth2 became eth126. And had to use,   
   >>as before, the dhcpcd command to get an IP address.   
   >   
   > How many ethernet card do you have:   
   >   
   > dmesg|grep eth   
   >   
   > The idea of 70-persistent-net.rules is to keep the names of ethernet   
   > interfaces constant even after adding extra cards. I have a machine which   
   > has one built-in ethernet port (tigon3). udev has created a line in   
   > 70-persistent-net.rules for naming it eth0. I have later added another card   
   > (intel e100). udev added a line naming it eth1. Because e100 is found first   
   > after boot, it becomes eth0, and tg3 becomes eth1. With the help of   
   > 70-persistent-net.rules, udev then changes the names by renaming eth0 to   
   > eth126, eth1 to eth125, eth126 to eth1, and finally eth125 to eth0. So tg3   
   > is eth0 as originally!   
   >   
   > If you removed 70-persistent-net.rules, you should only have eth0 in that   
   > file after reboot. Or, if you have more than one ethernet chip, you could   
   > see that shuffling take place in dmesg but eth126 should not be left there.   
   -----   
   Thank you very much for your long explanation. The problem has been solved,   
   please read the following threads.   
      
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