Internet Protocol (IPv4 and IPv6)

These attack trees cover IP as an attack surface rather than a protocol specification. IPv4 and IPv6 carry distinct failure modes: fragmentation abuse, source spoofing, header manipulation, dual-stack trust confusion, and neighbour discovery exploitation. Each is modelled here as a path toward routing manipulation or trust collapse. Protocol reference material for IPv4 and IPv6, covering addressing notation, subnetting, and address types, lives in the Grimoire.