Matthew Marsh has done much research on the application of Linux as a router operating system - especially for an extremely complex IPv4 routing requirements - and has compiled the findings into Policy Routing Using Linux. This is a rich read for anyone interested in working with iproute2 or Routing Policy Database (RPDB). In fact, many Marsh discusses the concept applies to routers in general, you will find this book conceptually useful (if not practically so) even if you do your policy routing on other types of equipment. As policy routing is not a basic concept you should understand for network interconnection, this is not the introductory text. special topics, such as the ability of Linux routing policy tools to interact with dynamic routing protocols, dealt with adequately in the sidebars Wall. - David Topics covered: The implementation of policies for IPv4 and IPv6 routing problems, with specific solutions outlined for the Linux operating system.