ethtool 是一个 Linux 下的网络驱动程序的诊断和调整工具，可获取网络设备的相关信息，包括连接状态、驱动版本、PCI 总线定位等等。
ethtool 3.8 改进记录：
Destination MAC addresses can now be set in L3/L4 flow spec rules (-N/-U options).
A version check has been added for et131x regs.
Full 64 bits of user-data (-n/-u options) are now shown.
20000baseKR2 cap display options have been restored.
The man page has been improved.
项目主页：https://www.kernel.org/pub/software/network/ethtool/
下载地址：https://www.kernel.org/pub/software/network/ethtool/ethtool-3.8.tar.gz
来自:开源中国社区
