Marionnet:

#!/bin/bash -ex
#Script by Rik Goldman
# Set Hostname
HOSTNAME=marionnet
echo "$HOSTNAME" > /etc/hostname
sed -i "s|127.0.1.1 \(.*\)|127.0.1.1 $HOSTNAME|" /etc/hosts

# install Dependencies and Applications
apt-get update
DEBIAN_FRONTEND=noninteractive apt-get -y \
    -o DPkg::Options::=--force-confdef \
    -o DPkg::Options::=--force-confold \
    install wireshark \
        zenmap \
        irssi \
	xrdp \
	pastebinit \
	chromium \
	aptitude \
	flex \
	libtool \
	bison \
	xterm \
	gawk \
	aptitude \
	graphviz \
	uml-utilities \
	libgtk2.0-dev \
	libglade2-dev \
	bridge-utils \
	uml-utilities \
	x11-xserver-utils \
	rlfe \
	tightvncserver \
	sudo \
        ocaml-native-compilers \
	ocaml-compiler-libs\
	camlp4\* \
	liblablgtk2-gnome-ocaml-dev \
	graphviz uml-utilities \
	bridge-utils \
	vde2 \
	gcc \
	xserver-xephyr \
	make \
	gettext \
	xterm \
	bzr \
	libvdeplug2
mkdir ~/tmp
cd ~/tmp
bzr get --verbose lp:ocamlbricks/0.90.x ocamlbricks
cd ~/tmp/ocamlbricks
make && make install

cd ~/tmp
bzr get --verbose lp:marionnet/0.90.x marionnet
cd ~/tmp/marionnet
make && make install

mkdir -p /usr/local/share/marionnet/
cd /usr/local/share/marionnet/
wget http://www.marionnet.org/download/snapshots/stuff/filesystems-most-recent.tar.bz2
tar xfv filesystems-most-recent.tar.bz2
rm -f filesystems-most-recent.tar.bz2

cd /usr/local/share/marionnet/
wget http://www.marionnet.org/download/snapshots/stuff/uml-kernel-binaries-most-recent.tar.bz2
tar xfv uml-kernel-binaries-most-recent.tar.bz2
rm -f uml-kernel-binaries-most-recent.tar.bz2

echo "chmod a+rw /dev/net/tun" >> /etc/rc.local
echo "/usr/local/sbin/marionnet-daemon.byte &> /dev/null &" >> /etc/rc.local

How does Marionnet look compared to Gini? Or are they not comparable?

GINI (GINI is not Internet) is a toolkit for creating virtual micro Internets for teaching and learning computer networks. It provides an easy to use graphical user interface (GUI) called gBuilder for creating network instances. Using gBuilder, the user can create small to moderate sized networks. Once the network is built, parameters such as subnet addresses are assigned by the user to different components of the network. gBuilder provides support by automatically computing routing tables and automatically assigning IP and MAC addresses.

Using the gBuilder interface, the user can start the network. The starting process creates virtual instancess of each network element and connects them as specified in the network. For example, User-Mode Linux instances are started for machines and custom user-level routing programs are started for routers. By default, all elements of a network run within the machine from where gBuilder was started. However, gBuilder provides facilities to run the elements on a remote server.