Linux : udev renamed network interface eth0
to eth1 on RHEL6 after clone
In some rare
circumstances, your system may boot without network interface and you discover
the following message in dmesg :
udev: renamed network
interface eth0 to eth1
Since RHEL6, kudzu is no longer available since the kernel and
udev take care of hardware changes. So, you need to modify using udev to
get back you’re eth0 interface. Edit the following file “/etc/udev/rules.d/70-persistent-net.rules“.
Normally, you should
have a double entry (eth0 and eth1) with different MAC address. This often
happen when the OS is virtualized. Just delete the whole entry for eth1 and
then rename eth1 to eth0 on the following entry and reboot. There is how the
udev network interface entry look like :
# PCI device 0×8086:0x100f (e1000)SUBSYSTEM==”net”,
ACTION==”add”, DRIVERS==”?*”, ATTR{address}==”00:50:56:34 :0f:38″,
ATTR{type}==”1″, KERNEL==”eth*”, NAME=”eth0“
Also
need to make changes to network HWADDR under /etc/sysconfig/network-scripts/ifcfg-eth0
