==> default: Clearing any previously set network interfaces...
There was an error while executing `VBoxManage`, a CLI used by Vagrant
for controlling VirtualBox. The command and stderr is shown below.
Command: ["hostonlyif", "create"]
Stderr: 0%...
Progress state: E_FAIL
VBoxManage.exe: error: Failed to create the host-only adapter
VBoxManage.exe: error: Code E_FAIL (0x80004005) - Unspecified error (extended info not available)
VBoxManage.exe: error: Context: "enum RTEXITCODE __cdecl handleCreate(struct HandlerArg *)" at line 70 of file VBoxManageHostonly.cpp
报错原因：
在Windows10中，，网络计谋的变革，VirtualBox没有相应权限
解决方案：
①打开Orcle VM VirtualBox图形界面。打点-->全局设定-->网络-->仅主机（Host-Only）网络，改削IPv4地点为192.168.33.100。生存退出
②变动Windows网络配置，改削VirtualBox Host-Only Ethernet Adapter手动设定ip地点为192.168.33.100。
③改削vagrant的配置文件VagrantFile，在private-network中改削对应网络设置为：config.vm.network "private_network", ip: "192.168.33.100", name: "VirtualBox Host-Only Ethernet Adapter" 这段配置的暗示使用现有的网络配置，不再自动创建对应的网卡信息。
再次启动即可进入虚拟机了~~~
Windows10环境vagrant+VirtualBox虚拟机无法创建私有网络的解决方案。