Enable eth0 centos-6.7

I have created a VM in virtual box using Centos-6.7. I have configured eth0 interface as bridge adapter. However I am not able to connect to internet. When I did ifconfig , I could only see loopback address as shown below.


ifconfig – displays the connected network interfaces.

ip link displays the available network interfaces on machine.


ip-link – displays the available network interfaces


  1. add NETWORKING=yes in /etc/sysconfig/network file.
  2. create a new file called ifcfg-eth0 in /etc/sysconfig/network-scripts/ folder as shown below. ifcfg-eth0DEVICE=eth0
  3. save and reboot the machine.
  4. Now you should be able to see the eth0 network in ifconfigifconfig-eth0

ifup eth0 will throw an below error  “Configuration for eth0 not found “ unless we create a file in /etc/sysconfig/network-scripts/ifcfg-eth0 no-device-found

ifup eth0 throws “Device eth0 does not seem to be present, delaying initialization.”

rm -f /etc/udev/rules.d/70-persistent-net.rules