环境： centos6.6 32位，重启网络，报以下错误：
vm 10.0
[ root@niejicai network-scripts]# ifup eth1
Error: Connection activation failed: The connection is not for this device.
解决方法：
[root@niejicai]# chkconfig NetworkManager off
[root@niejicai]# chkconfig network on
[root@niejicai]# service NetworkManager stop
[root@niejicai]# service network start
5、然后重新启动网络，即可
RTNETLINK answers: File exists
[ root@niejicai network-scripts]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:0C:29:13:16:3B
inet addr:192.168.1.218 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe13:163b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6341 errors:0 dropped:0 overruns:0 frame:0
TX packets:825 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:561670 (548.5 KiB) TX bytes:149290 (145.7 KiB)
Interrupt:19 Base address:0x2000
eth1 Link encap:Ethernet HWaddr 00:0C:29:13:16:45
inet addr:192.168.10.218 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe13:1645/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:33 errors:0 dropped:0 overruns:0 frame:0
TX packets:49 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:11286 (11.0 KiB) TX bytes:13590 (13.2 KiB)
Interrupt:18 Base address:0x2080
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:65536 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)
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原文链接：https://blog.csdn.net/niejicai/article/details/50588396