Making connections
Up until this point, we've focused on physical cables to make connections between interfaces. But how would we connect two interfaces that didn't have physical interfaces? For this purpose, Linux networking has an internal interface type called Virtual Ethernet (VETH) pairs. VETH interfaces are always created in pairs making them act like a sort of virtual patch cable. VETH interfaces can also have IP addresses assigned to them, which allow them to participate in a layer 3 routing path. In this recipe, we'll examine how to define and implement VETH pairs by building off the lab topology we've used in previous recipes.
Getting ready
In order to view and manipulate networking settings, you'll want to ensure that you have the iproute2 ...
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