[root@localhost ~]# service network restart
Shutting down interface bond0: ERROR : [ipv6_test_device_status] Missing parameter 'device' (arg 1)
[ OK ]
Shutting down interface em2: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface bond0: Device does not seem to be present, delaying initialization.
[FAILED]
Bringing up interface em2: Determining if ip address 10.16.20.157 is already in use for device em2...
[ OK ]
解决：
加载bonding模块
modprobe bonding
查看模块是否加载成功：
lsmod | grep bonding
再次重启网卡
service network restart
