This section describes how to configure the NetEngine 8000 F to allocate prefixes to a CPE when the CPE works in unnumbered routing mode. The CPE allocates the prefixes to the attached host for the host to generate IPv6 addresses.
In DHCPv6 prefix allocation, the IA_PD option is used to carry IA prefixes.
The CPE initiates a connection request, and the NetEngine 8000 F uses DHCPv6 (IA_PD) to allocate prefixes to the CPE and the CPE allocates the prefixes to the attached host for the host to generate IPv6 addresses.