
Chapter 16 • IPv6 Autoconfiguration 289
for acquiring addresses (that is, software or hardware that has been
hard-coded to use a particular network prefix or address), the authors
also describe an attack that is possible during the renumbering process.
Attacks are also possible. Suppose, for example, that the new prefix has
been presented by a service provider, and the service provider starts
advertising the prefix before the customer network is ready. The new
prefix might be targeted in a distributed denial of service attack, or
a system might be broken into using an application that would not
cross the firewall using the old prefix, before the network’s