Here is a new bug which I faced on virtuozzo 4 and 4.6 for Centos 6 VPS. VPS fails to add IP during start or networking fails when network is restarted : -bash-4.1# /etc/init.d/network restart Shutting down loopback interface: [ OK ] Bringing up loopback interface: RTNETLINK answers: Operation not supported Failed to bring up… Continue reading Virtuozzo : RTNETLINK answers: Operation not supported