Abandoning abandoned leases??

[John Hascall]

Well, I guess I'll answer my own question.

In abandon_lease() in the file server/mdb.c we find the artfully
commented line:

	lt -> ends = cur_time; /* XXX */

which means that when dhcpd reads this lease when it restarts
it is guaranteed to be time for a state change so it goes
from binding_state ABANDONED to next_binding_state FREE.

As a quick test I added:

	lt -> ends += 86400;

and sure enough, my abandoned leases are still there though
(so far) 22.5 hours worth of restarts.


John


> Everytime our dhcpd server restarts (and owing to "NetReg"
> that is quite often) it seems to forget about all the
> addresses which were abandoned.  This has become a
> major problem.
> 
> If I stash a copy of the lease file immediately before
> and after restarting dhcpd and do a diff on those files
> I see all the abandoned leases in the before but not
> the after file.
> 
> Is this a "feature"?  Or has something gone wrong?
> 
> We are running Internet Systems Consortium DHCP Server V3.1.0
> 
> Thanks,
> John
>