The components fall into the following categories:

• Network components
• Address allocation components
• Services
• Host and device platforms
• User tools

We discuss these categories below.

In the light of the IETF v6ops WG activity on studying IPv6 network renumbering [RFC4192], we also cite components where hardcoded IP(v4) addresses may be found, that may need consideration in IPv6 networks. Further renumbering reporting can be found in D3.6.1 [D3.6.1] and D3.6.2 [D3.6.2].