问题描述：
虚拟机安装完centos7，并配置好网络之后，仍然无法上网。具体表现是：可以ping通本机设置的静态IP，但是无法ping通网关。在确认网络配置没有问题之后，查看日志/var/log/messages，日志显示如下：
Mar 4 07:13:10 localhost kernel: net enp0s10f0: 21140 transmit timed out, status fc6981c7, SIA fffffe00 00000068 00000070 fffffec8, resetting... Mar 4 07:13:18 localhost kernel: net enp0s10f0: 21140 transmit timed out, status fc6981c7, SIA fffffe00 00000068 00000070 fffffec8, resetting... Mar 4 07:13:26 localhost kernel: net enp0s10f0: 21140 transmit timed out, status fc6981c7, SIA fffffe00 00000068 00000070 fffffec8, resetting... Mar 4 07:13:34 localhost kernel: net enp0s10f0: 21140 transmit timed out, status fc6981c7, SIA fffffe00 00000068 00000070 fffffec8, resetting... Mar 4 07:13:42 localhost kernel: net enp0s10f0: 21140 transmit timed out, status fc6981c7, SIA fffffe00 00000068 00000070 fffffec8, resetting... Mar 4 07:13:50 localhost kernel: net enp0s10f0: 21140 transmit timed out, status fc6981c7, SIA fffffe00 00000068 00000070 fffffec8, resetting... Mar 4 07:13:58 localhost kernel: net enp0s10f0: 21140 transmit timed out, status fc6981c7, SIA fffffe00 00000068 00000070 fffffec8, resetting...
解决方法：
systemctl disable irqbalance reboot
总结：
解决问题要习惯利用日志，根据日志信息去查找解决方法