Duplicated leases, same IP and same MAC

carlos jorge carlosd2002 at hotmail.com
Wed Sep 21 21:49:00 UTC 2011

> >  > > > The second lease entry had an "atsfp" entry added to it; which I
> >>  >> seem to recall is related to failover.
> >>
> >>  >So if it's normal, and like in memory the DHCPd had 2 lease for the
> >>  >same IP and MAC (tested via omshell), how can i use OMAPI/omshell to
> >>  >get a lease in this condition?
> >>
> >>  Are you using failover ? If so, then first thing would be to upgrade.
> >>  3.1.3 is very old and I think you'll find the release notes for later
> >>  versions make mentions of bug fixes and improvements related to
> >>  failover.
> >>
> >
> >
> >I just was able to found release notes to these versions on site 
> >(there are more?):
> >DHCP 4.2
> >DHCP 4.1-ESV-R3
> My apologies, I had version amnesia - it's been a hard week and only 
> half way through :( I was thinking of the 3.0.x versions which are 
> now long since EOL and during which many failover related changes 
> were made. I would still suggest upgrading if you can and see if the 
> problem persists - 3.1.3 is EOL.
> -- 

about the:

Client lease records are recorded at most once every 15 seconds. 
 This  keeps the client from filling the lease database disk quickly on 
very small  lease times. [ISC-Bugs #19660]

In a V4.1.2 with no failover i dont had the problem, it could be 3 things (i think) less traffic, no failover, or due the bug fix mencioned, what is your guess?

What do you think?

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