Enable TUN/TAP in OpenVZ

For installing TUN/TAP for a OpenVZ vps, you should first make sure that the module is enabled in the node.

For this you need to run the command bellow.

# lsmod | grep tun

 If the module is not installed, just install it by running

# modprobe tun

Now to enable the module to the vps, run the following commands. Replace Veid with your vps id

# vzctl set Veid --devnodes net/tun:rw --save

# vzctl set Veid --devices c:10:200:rw --save

# vzctl stop Veid 

# vzctl set Veid --capability net_admin:on --save

# vzctl start Veid

# vzctl exec Veid mkdir -p /dev/net

# vzctl exec Veid chmod 600 /dev/net/tun

Now TUN/TAP is enabled for the vps. To check this get into the vps.

# vzctl enter Veid

Now run the following command in the vps.

# cat /dev/net/tun

 The result of the above command should be

cat: /dev/net/tun: File descriptor in bad state