我已经安装了 virtualbox 5.1.20 版和 vagrant 1.9.4 版，然后当我运行时vagrant up，出现以下错误
Command: ["hostonlyif", "create"]
Stderr: 0%...
Progress state: NS_ERROR_FAILURE
VBoxManage: error: Failed to create the host-only adapter
VBoxManage: error: VBoxNetAdpCtl: Error while adding new interface: VBoxNetAdpCtl: ioctl failed for /dev/vboxnetctl: Inappropriate ioctl for devic
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component HostNetworkInterfaceWrap, interface IHostNetworkInterface
VBoxManage: error: Context: "RTEXITCODE handleCreate(HandlerArg*)" at line 94 of file VBoxManageHostonly.cpp
我在这里找到这个答案升级到 Ubuntu 16.04 后无法加载“vboxdrv”（我想保持安全启动）但是当我进入第三步时sudo mokutil --import MOK.der，出现以下错误
EFI variables are not supported …