Virtuozzo VPN activation on Linux VPS

Step 1:

Make sure the tun module has been already loaded on the hardware node:
# lsmod | grep tun

If it is not there, use the following command to load tun module:
# modprobe tun

Step2:

Granting container an access to TUN/TAP

Allow the container to use the tun/tap device:

vzctl set CTID --devices c:10:200:rw --save

vzctl set CTID --capability net_admin:on --save

And create the character device file inside the container:

vzctl exec CTID mkdir -p /dev/net

vzctl exec CTID mknod /dev/net/tun c 10 200

vzctl exec CTID chmod 600 /dev/net/tun

VPN Parameters have been activated to the container