Software router state of the art

[fw at deneb.enyo.de (Florian Weimer)]

* Dorn Hetzel:

> Ok, it's probably a stupid question, but given the relative ease of
> putting 4gb+ ram on a 64bit platform, could packet per second
> performance be improved by brute forcing the route lookup as an array
> of 1 byte destination interface indexes for a contiguous swath of
> /32's from bottom to top?

8 bits per destination are not enough because you really want to put all
the necessary L2 information into the FIB.  Perhaps even AS numbers, for
flow export.