Problem with lease time

David W. Hankins dhankins at
Thu Nov 5 18:06:28 UTC 2009

On Mon, Nov 02, 2009 at 04:09:02PM -0500, Denis Laventure wrote:
> I also noticed that when the servers are restarting after a config change, sometime, if I release/renew at the same time of the server restart, I get 86400. If I renew after that I return to 3600...

If the servers are not in normal state (in communications-interrupted
for example), they will give "TSFP-optimal" leases.  That is at best
TSFP+MCLT but not exceeding the desired lease time, and at worst
0+MCLT where TSFP is zero or in the past.

So if you are noticing different behaviour directly after a restart,
but not later on, your servers may be falling out of communication.

David W. Hankins	BIND 10 needs more DHCP voices.
Software Engineer		There just aren't enough in our heads.
Internet Systems Consortium, Inc.
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