switch1 = "planetlab2.virtues.fi"
switch2 = "planetlab2.upc.es"
host1 = "planetlab2.ionio.gr"
host2 = "iraplab2.iralab.uni-karlsruhe.de"
switch1 = "planetlab2.virtues.fi"
switch2 = "planetlab2.upc.es"
host1 = "planetlab2.ionio.gr"
host2 = "iraplab2.iralab.uni-karlsruhe.de"