\subsection{SUT}
%3,4
+
+\includegraphics[width=\linewidth]{SUTsetup}
+
The \textit{System under test} (SUT) is the TCP implementation of a system
running a Linux kernel\footnote{\url{http://www.kernel.org}} version $3.13$.
TCP is not a program that runs on its own and therefore we have to make use of