320 Chapter 4—DHCPv6
• By design, there is no router option in DHCPv6 (see the description about address
allocation in Section 4.2.1). Similarly, there is no subnet mask (or prefix length) option
in DHCPv6.
4.3 Code Introduction
This section and the following three sections describe KAME’s DHCPv6 implementation,
providing a solid understanding of how the protocol works. Unlike the implementation descrip-
tion in many other chapters of this series of books, the target code is the 20050509 version of
the KAME snapshots. The newer version is used because the standardization of the DHCPv6
protocol was not completed when the code base was chosen for the other chapters, and the
implementation at that time was immature. In addition, the newer version supports ...