[Dnsmasq-discuss] Pulling DHCP leases from an external script?
Brian Rak
brak at gameservers.com
Wed Oct 3 20:51:53 BST 2012
I'm trying to assign addresses via DHCP for a number of different
networks (using ip-helper and option 82 on the switches). It's going to
be tough for me to come up with a predefined list of what leases belong
to what port, but it's definitely something I should be able to figure
out when the lease is coming in. There's also the fact that the config
file would end up being quite large if I pregenerate it for every
possible combination.
On 10/3/2012 3:47 PM, Jay Imerman wrote:
> I'm not 100% certain, but the way I read the man page, the script is
> triggered after the dnsmasq event occurs, so you can pass some custom
> behavior to a script after dnsmasq has managed the lease. However, it
> sounds like you want to customize dnsmasq behavior and insert your own
> algorithm for allocating IP addresses? Just out of curiosity, why?
> You can specify quite a complex set of allocation rules using tags and
> more, why would you need to have anything other than that?
> _______________________
> Jay Imerman
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>
>
> On Wed, Oct 3, 2012 at 3:14 PM, Brian Rak <brak at gameservers.com
> <mailto:brak at gameservers.com>> wrote:
>
> I'm trying to set up a DHCP server so that on any request for a
> new lease I can execute a script and have the script return an IP
> address (and other information).
>
> Is this something that is currently possible with dnsmasq? From
> reading the man page, I can't tell if I will get this behaviour
> with --dhcp-script --leasefile-ro.
>
> Basically, it would be impossible for me to specify all the
> possible DHCP leases at startup, but when a lease request is
> received I would be able to determine what IP to assign.
>
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