Weblog d'en Xavi Caballé «I don't know half of you half as well as I should like, and I like less than half of you half as well as you deserve» Bilbo Baggins, a «The Lord of the Rings. The fellowship of the Ring»
A bogon prefix is a route that should never appear in the Internet routing table. A packet routed over the public Internet (not including over VPN or other tunnels) should never have a source address in a bogon range. These are commonly found as the source addresses of DDoS attacks.
There are a variety of ways to track the bogons and updated IANA allocations. This page includes a collection of links and references to assist those who wish to properly filter the bogon prefixes.
This article is set to arm you with the knowledge that allows one to approach a packet stream and successfully be able to determine if there are any missing packets. This is imperative in cases where your data set is missing packets that may contain crucial indicators of the breach. You would only know that by doing the analysis shown below.