[vbox-dev] Setting linkstate using API?

Klaus Espenlaub klaus.espenlaub at oracle.com
Wed Jul 23 14:50:38 GMT 2014


On 23.07.2014 16:34, Karoline Haus wrote:
> Hi if I use VBoxManage I can disconnect a VM's virtual network cable
> using controlvm setlinkstate while the VM is running but I do not seem
> to be able to do that via the API/SDK. I don't seem to find the right
> commands to set. I tried to set cableConnected of INetworkAdapter but it
> does not allow me to change this while the VM is in running state. How
> can I unplug the cable via the API whilst the VM is running?

This means you're using the wrong Machine object, or completely lack the 
session handling... it works fundamentally the same way as if the VM 
isn't running: create a session, get a shared lock (an exclusive one 
isn't possible while the VM is running), and use the Machine reference 
associated with this session.

That one is writable.

> Basically I'm trying to simulate a network connection loss to the VM so
> that it then tries to obtain a new IP address via DHCP.


> Thanks
> Karoline

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