This seems to be possible based on the spec rfc 3315 page 23:
The configuration information in an IA consists of one or more IPv6 addresses along with the times T1 and T2 for the IA. See section 22.4 for the representation of an IA in a DHCP message.
Yet, I haven't been able to configure my DHCPv6 client to request these multiple IP addresses on an interface.
Does anyone know how to do this for a Linux DHCPv6 client (preferably running RedHat 6+, CentOS 6+, or Fedora), or on Windows?
My end goal is to do some testing with PCAP files. I would prefer to be able to generate these files myself, but if I can't get my client configured, I would like to find some PCAP files on the internet that I could use. So far, I haven't found anything.