[Users] Invoking guest os script, without guest having network connectivity?

[Shlomi Tsadok]

I'm looking for a way to configure the guest networking(including IP)
dynamically, using a custom script, right after VM creation.

Is there a similar feature in oVirt as the Invoke-VMScript in of VMware's
PowerCLI? It allows you to run a script in the guest OS, even before the
guest has networking connectivity ( the host talks to the vmtools agent
that's  installed in the guest).

Native KVM/libvirt option will be good as well.

Thanks,
Shlomi

Invoke-VMScript reference:
http://www.vmware.com/support/developer/windowstoolkit/wintk40u1/html/Invoke-VMScript.html
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