dhcpd failover server gives misleading error

[David W. Hankins]

On Thu, Aug 07, 2008 at 05:25:24PM +0200, Daniel Grandjean wrote:
> I'm running the latest 3.1.1 in failover mode.
> 
> DHCPDISCOVER from 00:1c:23:15:2e:c7 via aaa.bbb.ccc.252: peer holds all 
> free leases
> 
> After spending a lot of time watching the lease file content, the 
> failover protocol and so on, (and found no problems)
> 
> I appear that the 00:1c:23:15:2e:c7 client belongs to the denied class
> win2k-clients.
> 
> So the logged message is misleading and scary for the admin and 
> monitoring scripts  ;-)
> 
> Is this a configuration issue?

That's strange.

The new iterative allocate_lease() function, which 3.1.1 definitely
has, shouldn't have this issue.  It first seeks across pools by ACL,
and then digs into them for candidate leases.

So a lease that isn't permitted by ACL shouldn't get deeper into the
loop to have the "peer_has_leases" boolean set true.

I'd suspect there is another pool in that shared network the client
is allowed access to, and the server was unable to grant.

-- 
David W. Hankins	"If you don't do it right the first time,
Software Engineer		you'll just have to do it again."
Internet Systems Consortium, Inc.	-- Jack T. Hankins