http://zee.linxsol.com/system-administration/qdevice-eth0-does-not-seem-to-be-presentq-after-moving-or-cloning-a-rhelcentos-64-virtual-machine-in-vsphere.html
You may see this error message after cloning or moving a machine in VSphere. It could happen when you are not using distributed switch or you are moving one Virtual Machine to another host where this machine is unable to find the same network label. When you power on CentOS/RHEL 6.4 linux machine it encounters the error "Device eth0 does not seem to be present".
The problem arises when CentOS/RHEL 6.4 tries to remember the existing NIC of the virtual machine. But in case of moving or cloning VSphere changes the MAC address. Accordingly linux OS changes the device name from eth0 to eth1 and so on after finding a new MAC address. Backup your old files. You need to change and delete the old "SUBSYSTEM" entries (in case are not being used) and rename eth1 to etho in the file
/etc/udev/rules.d/70-persistent-net.rule accordingly to reflect the changes. After completing you also need to change /etc/sysconfig/network-scripts/ifcfg-eth0 to change MAC and name of the eth0.
vi /etc/udev/rules.d/70-persistent-net.rule
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.
# PCI device 0x15ad:0x07b0 (vmxnet3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:02:bf:b5", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x15ad:0x07b0 (vmxnet3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:8b:2f:fd", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x15ad:0x07b0 (vmxnet3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:8b:6e:15", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.
# PCI device 0x15ad:0x07b0 (vmxnet3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:8b:6e:15", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"