1. R+D+I in Information and Communications Technologies (Giditic), Universidad EAFIT, Medellin 050022, Colombia
2. Departamento de Computación, Universidad de Los Andes, Merida 5001, Venezuela
3. IMDEA Network Institute, 28918 Madrid, Spain
4. Design Engineering Research Group (GRID), Universidad EAFIT, Medellin 050022, Colombia