[Kea-users] DHCP6 subnet select fails. Basic config

[Tim Howe]

On Fri, 12 Jan 2018 06:15:44 +0000
Francis Dupont <fdupont at isc.org> wrote:

> I found at least 2 easy ways to fix your problem:
>  - the first one is to have a second relay which fills the link address:
>   the code skips all link addresses which are undefined or link local
>   as it wants to be able to identify the relay. BTW the interface-id
>   option must be added by the first (closest to client) relay.

	This is the current plan, which I may have mentioned.

>  - the second is from the ISC DHCP code which has a comment about L2 relays:
>   the idea is to use the receiving interface and client classes matching the
>   interface-id option. With 1.2 you have to know the number of relays
>   (1 in your case) to evaluate the right relay option
>   (syntax: relay6[0].option[18].hex == 'a/b/c') and to restrict each
>   subnet to a class matching an interface-id value.

	This is interesting enough that I might try it even if I don't
ultimately use it.

>   With 1.3 you get the two ways to count relays (1.2 / positive from
>   the server, negative from the client). With 1.4 you'll get classes
>   for pools which is far easier to use in particular when migrating
>   from ISC DHCP...

	Well, this is my first DHCP server, so I don't really have a
history to fall back to, but this still sounds like an interesting
feature.

Thanks!
--TimH