IPv6, wrangling Merlin's DHCPv6 Client to request IA-PD /60.

[PapaBear]

Finally decided to sign up and talk after using Merlin for my AC3200 for the last 6 months. (side-note: the latest alpha is working perfectly for me without a problem or hiccup.)

Here's my conundrum: I'm setting up IPv6 in my home net, and I've looked at many different scenarios of implementation. The easiest route seems to be to leverage Merlin's dnsmasq setup to do everything I want to with the network. I understand the configuration add / overwrite setup for dnsmasq on Merlin, but what I'm having issues with is the DHCPv6 Client that's in use.

I need to leverage that configuration to specifically request an IA-PD /60 so that my ISP will assign me a /60 block for use within my internal net as they only hand out /64 unless the client requests a /60 for internal subnetting. I've looked here, and even went grovelling to the almighty Google, to no avail that my meager brain could comprehend. So I'm asking here:

How do I setup Merlin's DHCPv6 Client to request an IA-PD /60 from my ISP when it boots?

On my Pi3 setup, the following is working with wide-dhcpv6-client when the pi is plugged directly into my modem:

interface eth0 {
    send rapid-commit;
    send ia-na 0;
    send ia-pd 0;
};

id-assoc pd 0 {
    prefix ::/60 infinity; #request /60 from ISP

    prefix-interface eth0 {
        sla-len 4;
        sla-id 0; #subnet 1
    };

    prefix-interface eth0 {
        sla-len 4;
        sla-id 1; #subnet 2
    };

    prefix-interface eth0 {
        sla-len 4;
        sla-id 2; #subnet 3
    };
};

id-assoc na 0 {
};

But I don't see where / how to do something like this with Merlin's DHCPv6 client.

Thank you for any assistance that can be given on this.

-PapaBear

 

[PapaBear]

I've continued to try to wrangle the beast into submission, but am continually confused and have to returned bruised and beaten. Can any assistance be rendered?