marionnet 0.90.6+bzr508-1build2 (amd64 binary) in ubuntu eoan

 Marionnet is a virtual network laboratory: it allows users to define,
 configure and run complex computer networks without any need for physical
 setup. Only a single, possibly even non-networked GNU/Linux host machine
 is required to simulate a whole Ethernet network complete with computers,
 routers, hubs, switches, cables, and more. Support is also provided for
 integrating the virtual network with the physical host network.
 .
 As Marionnet is meant to be used also by inexperienced people, it features
 a very intuitive graphical user interface. Marionnet depends on User Mode
 Linux and VDE Virtual Distributed Ethernet for the simulation part.