
\begin{important}
   \begin{itemize}

      \item
      The following labs are best run on a physical machine
      running \textbf{Linux} natively.
      \item
      It may be possible to run them within a Virtual
      Machine running under a hypervisor, such as
      \textbf{VMWare} or \textbf{Virtual Box}, or even
      \textbf{KVM}.  However, this requires \textbf{nested
         virtualization} to be running properly.
      \item
      Whether or not this works depends on the particular
      hypervisor used, the underlying host operating system
      (i.e., \textbf{Windows}, \textbf{Mac OS} or
      \textbf{Linux}) as well as the particular variant,
      such as which \textbf{Linux} or \textbf{Windows}
      version as well as the particular kernel.
      \item
      Furthermore it also depends on your particular
      hardware.  For example, we have found nested
      virtualization working with \textbf{VMWare} on various
      \textbf{x86\_64} machines but with \textbf{Oracle
         Virtual Box} only on some.

      \item
      If this works, performance will be poor as compared to
      running on native hardware, but that is not important
      for the simple demonstrative exercises we will do.

      \item
      Your mileage will vary!  If it does not work we cannot
      be responsible for helping you trying to get it
      rolling.
   \end{itemize}
\end{important}


