DHCPv6: is it possible to have a fixed prefix delegation for a host while allowing the IPv6 address assigned to be dynamic?

[perl-list]

Erik, 

This works fine for me. The only difference I see is that I have a range6 defined that would include the static and i'm not using include. Try a test not using include and see if it works for you. 

> From: "Erik Andersen" <eandersen at eoni.com>
> To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
> Sent: Wednesday, May 30, 2018 1:00:00 AM
> Subject: DHCPv6: is it possible to have a fixed prefix delegation for a host
> while allowing the IPv6 address assigned to be dynamic?

> I would like to hand out static DHCPv6 prefix delegations to hosts based
> on their client-id.

> I currently have a system of include files that includes on file for
> each host.

> Those files have something like:

> host 3c906af6703a {
> host-identifier option dhcp6.client-id
> 00:03:00:01:3c:90:6a:f6:70:3c;
> fixed-prefix6 2607:f248:320:130::/60;
> }

> They are included in part of a pool6 in a subnet6:

> pool6 { # For normal/WAN clients, not DOCSIS
> allow unknown-clients;
> deny members of "docsis";

> # Range for clients
> range6 2607:f248:102:10::10 2607:f248:102:10::ffff;

> # Range for clients requesting a temporary address
> range6 2607:f248:102:10::2:0/112 temporary;

> # Include static prefix delegations
> include "/etc/dhcp/staticpdinclude.conf";
> }

> But when a client is requesting a non-temporary address and a prefix
> (and is covered by a host definition), the response packet says there is
> no available address, and the log shows:

> Unable to pick client address: no addresses available - shared network
> 2607:f248:102:10::/64: 0 total, 0 active, 0 abandoned

> Why wouldn't the host directive inherit the range6 definition and use
> something from that range?

> Is it possible to have a dynamically picked non-temporary address
> assigned to a client, along with a fixed delagated prefix? If so, can
> someone share an example configuration that does that?

> Thanks,

> Erik

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