I'm trying to setup OpenVPN on a CentOS VPS (OpenVZ). But the problem I am having has to do with enabling the TUN/TAP interface. When I purchased the VPS service, I left a note to have the TUN/TAP device enabled. But it seems it wasn't enabled when I went to verify and use it. I contacted my provider and I was told that it was enabled when the VPS was setup. However, I feel it was most likely done incorrectly. I have had a service ticket opened since and the problem still exists.
I have given my provider the steps at the top of this webpage: http://vpsnoc.com/blog/how-to-setup-a-vpn-server-on-a-centos-vps-instantly/
I was told that they have done as I asked, but the TUN/TAP device is still not set up correctly.
I use this command to verify if TUN/TAP is enabled: cat /dev/net/tun
I am told that if it is enabled properly, I should see "File descriptor is in bad state."
However, I always see "No such device."
What am I or my VPS provider missing or not doing correctly?