linux下多网卡bonding的源码，Bonding实现就是将多块网卡虚拟成为一块网卡，这个聚合起来的设备看起来是一个单独的以太网接口设备。-linux source code under the multi-NIC bonding, Bonding multiple network adapters to achieve is to become a virtual network adapter, this device appears to be aggregated together