[Linux 常見問題] How To Fix “Device eth0 does not seem to be present, delaying initialization” Error

Source From Here 
Preface 
I was playing with My Virtualbox today and i tried to clone some Centos Servers. But after this, when starting the eth0, it is no more available. 

# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

# ifup eth0
Device eth0 does not seem to be present, delaying initialisation

To Solve this 
Delete networking interface rules file so that it can be regenerated and reboot your CentOS system. 

# rm /etc/udev/rules.d/70-persistent-net.rules
# reboot

New Mac address has been generated: 

view plaincopy to clipboardprint?

1. # This file was automatically generated by the /lib/udev/write_net_rules  
2. # program, run by the persistent-net-generator.rules rules file.  
3. #  
4. # You can modify it, as long as you keep each rule on a single  
5. # line, and change only the value of the NAME= key.  
6.   
7. # PCI device 0x8086:0x100e (e1000)  
8. SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:fe:c1:03", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"  

Now edit /etc/sysconfig/network-scripts/ifcfg-eth0, 

view plaincopy to clipboardprint?

1. # Add   new  HWADDR generated or  remove it   
2. # Remove UUID   line  
3. TYPE=Ethernet  
4. HWADDR=08:00:27:fe:c1:03  
5. BOOTPROTO=static  
6. IPADDR=192.168.140.141  
7. NETMASK=255.255.255.0  
8. GATEWAY=192.168.140.2  
9. DNS1=8.8.8.8  
10. DNS2=168.95.1.1  
11. DEFROUTE=yes  
12. PEERDNS=yes  
13. PEERROUTES=yes  
14. IPV4_FAILURE_FATAL=no  
15. IPV6INIT=yes  
16. IPV6_AUTOCONF=yes  
17. IPV6_DEFROUTE=yes  
18. IPV6_PEERDNS=yes  
19. IPV6_PEERROUTES=yes  
20. IPV6_FAILURE_FATAL=no  
21. NAME=eth0  
22. #UUID=2014320a-4e80-44e4-8a94-050199a3dcd7  
23. DEVICE=eth0  
24. ONBOOT=yes  

Restart the networking service: 

# service network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Determining if ip address 192.168.1.99 is already in use for device eth0...
[ OK ]
# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:FE:C1:03
inet addr:192.168.1.99 Bcastxxxxxxx Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fefe:c103/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4400 errors:0 dropped:0 overruns:0 frame:0
TX packets:129 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:387597 (378.5 KiB) TX bytes:19567 (19.1 KiB)

Supplement 
* CentOS & Device eth0 does not seem to be present 
* 複製虛擬機 Linux，網卡啟動失敗 Device eth0 does not seem to be...esent, delaying initialization