VirtualBox: Failed to Create Host-only Network Interface on Ubuntu Linux

After I installed Ubuntu to my Laptop, I began to install my favorite applications. Everything went smooth. One of my favorite application is VirtualBox. I’m big fan of it, and I use it on both Windows and Linux systems. All of my virtual machines are created on VirtualBox. So I installed VirtualBox, copied a virtual machine from my backup storage and just before run the virtual machine, I remembered that I need to set up IP address of the host-only network. I opened the network tab in VirtualBox settings and I couldn’t see any Host-Only networks (there should be one in default). So I clicked to “Add Host-Only Network” button and got a strange error:

I haven’t seen this error before. I have checked if “/dev/vboxnetctl” exists, and unfortunately it doesn’t. It’s obvious that the “vboxnetctl” file should be a part of VirtualBox software but it wasn’t there. One of the good thing of VirtualBox is, you can do everything using command line. So I tried to add host-only network using command line, and this time I see “a warning message” before the error: