Understanding TUN TAP Interfaces

As I mentioned in the previous article Understanding Bridges, Linux and most other operating systems have the ability to create virtual interfaces which are usually called TUN/TAP devices. This article will discuss those devices with particular focus on how they are used in OpenStack.

A Quick Introduction to Open vSwitch

In a previous article I discussed bridges and showed how the Linux utilities bridge-utils and iproute2 could be used to create virtual bridges within a system. This is great for simple set up but when deploying a cloud environment a bit more functionality is required and that’s where Open vSwitch comes in.

Fixing the MikroTik Router After an Upgrade

I recently upgraded from RouterOS V5.13 to V5.16. The interface is a bit nice to look at (especially in the web configuration tool) and there is now a quick setup window in WinBox. The only downside of the upgrade is that all of a sudden my Internet connection stopped working.