#在KVM中克隆出新的CentOS虚拟机时，出现如下问题：
service network restart
Shutting down loopback insterface: [ OK ]
Bringing up loopback insterface: [ OK ]
Bringing up interface eth0: Device eth0 does not seem to be present,delaying initialization. [FAILED]用ifconfig查看发现缺少eth0，只有lo；用ifconfig -a查看发现多出了eth1的信息
#解决办法1：
mv /etc/sysconfig/network-scripts/ifcfg-eth0 /etcsysconfig/network-scripts/ifcfg-eth1
将eth0的mac地址改为eth1的mac地址，同时改变其DEVICE名称为eth1，再重启网络即可#解决办法2：
rm -rf /etc/udev/rules.d/70-persistent-net.rules
reboot总之，只要保证/etc/sysconfig/network-scripts/ifcfg-eth0 与/etc/udev/rules.d/70-persistent-net.rules的信息一致即可，即网卡地址与网卡编号一致，这样service network restart 就可以配置成功