Just went through this last night UUID is involved now this should help - https://alteeve.com/w/Changing_the_ethX_to_Ethernet_Device_Mapping_in_EL6 On Thu, May 10, 2012 at 11:50 AM, Gregory P. Ennis <PoMec at pomec.net> wrote: > Everyone, > > Can anyone refer me to a tutorial as to how to rename the network cards, > ie I have one that ended up being system-eth3, that I want to be > system-eth1? > > I am setting up a new CentOS 6.2 system that I plan to use as a gateway > and e-mail server. The original machine had only one nic card, and to > my surprise the vendor did not have a 1000/100/10 card that would fit in > the pci-e slot. I ordered a pci-e network card, and while waiting for > it to arrive I purchased a Sabrent usb 1000/100/10 to finish my > development. I was able to get CentOS 6.2 to recognize the usb ethernet > adapter which had been assigned system-eth1, but I could not get data to > go through it (in or out). > > The pci-e network card came in, and after it was installed, and upon the > next boot it was assigned system-eth2. I tried to delete the usb eth1 > and reassign the pci-e to eth1, but have managed to really mess things > up. I deleted references to eth1 and eth2 in : > > /etc/sysconfig/networking > /etc/sysconfig/network-scripts > > hoping that the next boot would reassign the pci-e network card as eth1, > but now the system will not even recognize the new card. > > Is there any way to reset the numbering sequences of network cards so > that I can have the the desired names. I wish now I would have left it > alone, and just changed references to eth1 to eth2 in my iptables > firewall. > > Thanks much, > > Greg Ennis > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >