event trigger after ack

Shawn Routhier sar at isc.org
Thu Oct 1 20:46:24 UTC 2015

See the “on commit” (dhcpd.conf.5) and “execute” (dhcp-eval.5) statements.
In particular see the warning in dhcp-eval.5 about the program blocking until
the execute statement finishes.


> On Oct 1, 2015, at 8:46 AM, Leandro <ingrogger at gmail.com> wrote:
> Hi guys.
> Im thinking about a mechanism to fill a sql table with an updated leases status.
> Something like
> Time                  | Client-ip            |Client MAC    |  Relay IP
> Oct  1 12:16:22 |           | d4:21:22:74:18:0a |
> I achieved this using a perl tail script on the dhcp.log file matching the ACK lines.
> I was wondering if is it possible to do the same using a triggered script executed by the daemon after an ACK event occurs.
> Anyone can point some documentation about it ?
> Is it true that this could be risky since a bad script can lead to wrong function of the service ?
> Any advice would be usefull.
> Regards.
> Leandro.
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