Hi!
It seems the ip address is binded to the main server network card and that's why you got error ipaddress already in use, because the ipaddress is used by the main server NIC.
You need to remove the ipaddress from main server NIC and then need to add it in vps.
For Virtuozzo VPS ipaddress need to be routed to the server, there is no need to add them on main Server NIC.
