2.7. Layout of this document
We will be doing interesting stuff almost immediately, which also means that
there will initially be parts that are explained incompletely or are not
perfect. Please gloss over these parts and assume that all will become clear.
Routing and filtering are two distinct things. Filtering is documented very
well by Rusty's HOWTOs, available here:
We will be focusing mostly on what is possible by combining netfilter
and iproute2.
Take our 
