Automatic remove lease from pool

[Simon Hobson]

Henrik Sterndorff Jessen wrote:

>I am using dhcp to dish out fixed addresses to users. All users are
>connected to cisco switch ports that act as a relay and therefore add
>option-82 information to the dhcp query. I don't know the mac addresses
>of the users.
>
>I am assigning a fixed address to each user using a configuration like:
>
>----
>class "myClass" { match if (substring ((option agent.circuit-id),4,2) =
>09:02); }
>
>subnet 10.0.0.0 netmask 255.255.255.0 {
>	option routers			10.0.0.1;
>	pool { allow members of "myClass"; range 10.0.0.5 10.0.0.5; }
>}
>----




>Any way to force the dhcp server to automatically overwrite leases in
>this kind of setup?

Not at the moment.

There is a feature planned that would allow the administrator to use 
a different option for the database key (in this case 
agent.circuit-id) which would deal with that, but IIRC it didn't make 
it into 3.1