Automatic remove lease from pool
Simon Hobson
dhcp1 at thehobsons.co.uk
Wed May 23 20:07:28 UTC 2007
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
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