Create Centos NIC interface

If you need to create manually network interface in centos6

Get to network interface folder
cd /etc/sysconfig/network-scripts/

copy one of current to create a new one
cp ifcfg-eth0 ifcfg-ethX

Create correct UUID
uuidgen ethX >> ifcfg-ethX

Create correct MAC
cat /sys/class/net/ethX/address >> ifcfg-ethX

Open config file and update:
DEVICE
NAME
UUID
HWADDR

** tested on Centos6