Why are there only 3 Device Types in the USGv6 profile?
For a detailed explanation refer to the following sections of the USGv6 profile: 1.3 profile Structure and Conventions, 3 Host profile, 4 Router profile, 5 Network Protection Device profile, and Appendix A profile Usage Guidance and Examples. In general, such questions are indicative of some confusion between the use of the notion of device types to distinguish and organize sets of requirements within the profile and the notion of product classes to describe typical bundlings of capabilities in distinct consumer products. In general, base IETF IPv6 technical specifications only differentiate requirements based upon two types of nodes; Hosts and Routers. The USG profile follows the IETF (e.g. RFC4294 IPv6 Node Requirements) and IPv6 Ready profiling efforts by maintaining this taxonomy as the primary discriminator among sets of technical requirements. To address the typical variability in feature sets among difference classes or vendors of products, the USGv6 profile provides a set of ex