[Kea-users] User classification and DHCP-Option assignment

[Francis Dupont]

dhairav mehta writes:
> We were looking at assigning different DHCP-OPTIONS based on different
> MAC Addresses connected to the same subnet.

=> you can use either:
 - host reservations but this requires one entry per host with
   an IP address or a hostname

 - a client class in particular if it is easy to match MAC Addresses

> Eg. All MAC addresses starting from 7C:XX:XX:XX:XX should be given IP
> from the subnet 192.168.0.0/24 (Pool - 192.168.0.10 - 192.168.0.200)

=> so a client class seems to be a right solution.

> And should be allocated DNS address of 192.168.0.254 and default gateway
> of 192.168.0.254 and all other users should get the IPs assigned from
> the SAME pool above but DNS address should be 192.168.0.253 & No default
> gateway should be assigned.

=> you can get an issue because the subnet option takes precedence
on the client class one. Fortunately in 1.4-beta there is a way to
inverse the precedence and to compose classes so you should be able
to configure this.

> All testing and configuration was performed over Kea 1.3.0 stable
> (Locally compiled with MYSQL backend support)

=> unfortunately 1.3.0 does not provide the new client class code.

> We also tried using client-classes, but it only works for multiple
> subnets. We need to use the same subnet across all IP assignments due to
> technical constraints.

=> I don't understand the "only works for multiple subnets".
If it means that you want a class which matches only clients
which belong to a particular subnet this is in 1.4-beta.

Regards

Francis Dupont <fdupont at isc.org>