If we have read properly the client documentation, connecting to a device is made by
'vhclient -t use,<device address>', the address being taken through 'vhclient -t list'.
We have homonyms in the client list (from different VH servers) :
--> device A (raspberrypi.112)
--> device B (raspberrypi.114)
--> device C (raspberrypi.114)
--> device D (raspberrypi.115)
--> device E (raspberrypi.112)
So how do we use discriminate devices A and E, or devices 1 and C ?