This message was posted on behalf of Intel Corporation
The iproute2 installed in the image do not have the tuntap feature enabled. For this, you can install a newer iproute2 version with all the features enabled, you will need to install all the dependencies required like Berkeley DB and others.
Take a look at: http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2
You can also, include this package in a new custom image: http://recipes.yoctoproject.org/rrs/recipedetail/40/