docker工具箱Windows 7：从局域网断开连接时停止工作

在我们公司，我们使用docker工具箱通过VirtualBox在windows 7机器上运行docker。 docker工具箱安装程序在需要pipe理员权限的Windows机器上创build一个networking适配器。 安装完成后，我们可以使用docker-machine创build一个boot2docker虚拟机，并通过docker-machine env连接。 一切都很好。

但是，从公司networking断开连接时，设置会中断。 现在不可能再连接到现有的虚拟机。

docker机器env myvm

Error checking TLS connection: Error checking and/or regenerating the certs: There was an error validating certificates for host "192.168.99.100:2376": dial tcp 192.168.99.100:2376: connectex: An attempt was made to access a socket in a way forbidden by its access permissions. You can attempt to regenerate them using 'docker-machine regenerate-certs [name]'. Be advised that this will trigger a Docker daemon restart which will stop running containers. 

当我尝试重新生成证书（docker-machine regenerate-certs myvm ）时：

 Regenerating TLS certificates Waiting for SSH to be available... Detecting the provisioner... Copying certs to the local machine directory... Copying certs to the remote machine... Setting Docker configuration on the remote daemon... This machine has been allocated an IP address, but Docker Machine could not reach it successfully. SSH for the machine should still work, but connecting to exposed ports, such as the Docker daemon port (usually <ip>:2376), may not work properly. You may need to add the route manually, or use another related workaround. This could be due to a VPN, proxy, or host file configuration issue. You also might want to clear any VirtualBox host only interfaces you are not using. 

接收VM不能解决问题。 连接到Internet并激活VPN也不能解决问题。

任何想法是什么原因可以和/或如何解决它？