Serving DHCPv6 requests from an IPv4 network - possible?

[David Jennings]

Hello all,

We have a DHCP server on an all-IPv4 network. We would like to start
experimenting with IPv6 configuration and as an initial step I would
like to be able to configure the DHCP server to respond to DHCPv6
requests without moving the server itself from it's IPv4-only address.

Is this possible?

I know that I need to configure a subrange that contains the address of
the interface upon which the server is running, which I've done as follows:

-------------

# dhcpd6.conf

shared-network "local" {
         deny booting;
         not authoritative;
         subnet 10.116.74.0 netmask 255.255.255.0 {}
}

subnet6 2406:DC01:1:1::/64 {
         range6 2406:DC01:1:1::10 2406:DC01:1:1::200;
}

-------------

however when starting the server with the "-6" option I then get the error:

subnet_number():inet.c:53: Addr/mask length mismatch.

which is presumably because I'm mixing IPv4 and IPv6 in the configuration.

So is what I'm trying to do possible? Or do I have to host the DHCP
server on a dual-stack IPv4/IPv6 address?

Thanks,

David.