Freeradius4 DHCPv6 configuration

[Ľudovít Mikula]

Hi experts!

   I am trying to configure DHCPv6 in freeradius 4. I'd like to be able 
to assign an IP address from a pool based on Option82 (Remote-Id + 
Circuit-Id).

My problem is that I seem to be unable to find a decent client for 
testing this setup.

There are plenty of test DHCPv4 clients, but not many DHCPv6 clients 
which also can send custom DHCP options.
Any recommendations (ideally linux CLI client/script)?

If somebody already did such configuration, I'd be very grateful for any 
hints.


Ludo