Hamachi 2 for CentOS 6.3 ham0 network interface missing

Question

I am trying to install Hamachi on CentOS 6.3 (64-bit), but the network interface never appears. I installed from the official Hamachi RPMs:

sudo rpm -ihv logmein-hamachi-2.1.0.86-1.x86_64.rpm

Installation appears to succeed:

Preparing...                ########################################### [100%]
   1:logmein-hamachi        ########################################### [100%]
install_initd ok.
Starting LogMeIn Hamachi VPN tunneling engine logmein-hamachi[  OK  ]

I am able to use the Hamachi client to join networks, and I even see this new server in the network I joined in the peer list on other clients. Connection is green, with a direction connection to all peers in the network. However, I am unable to actually send any data over Hamachi.

The problem is that the network interface doesn't exist. When I run ifconfig, I only see the usual interfaces. ham0 is not listed, like it is on my Ubuntu boxes. No interface has my Hamachi IP address assigned.

I have tried forcing the reinstall of the RPM, restarting the daemon, and restarting the box. How can I get the ham0 interface to install?

Answer 1

The problem turned out to be that the TUN/TAP driver was not enabled. Running modprobe tun was unable to load it.

This server was a VPS hosted under OpenVZ. As suggested by another post, I had my VPS host enable the TUN/TAP driver, restarted the Hamachi daemon, and all was well.