[Dnsmasq-discuss] Same IP for a range of MAC addresses?

[Tom Metro]

Stephen Lee wrote:
> If I forced all of the target devices to give out the same client ID (eg.
> targetdev), would the following work?
> 
> dhcp-host=id:targetdev,192.168.1.10

Yes, I believe so.


> Heh...I did try using /dev/null for the lease file and dnsmasq complained
> that it was an illegal file type (or something like that).

Could be, as /dev/null is a character device. I wonder if it explicitly 
checks the file type (seems unlikely), or you're just seeing the 
resulting error from performing some unsupported operation, like a seek.


> I've written a script to detect when the ethernet cable is unplugged
> after programming a device and to restart dnsmasq. This then allows
> the same IP to be leased out again but to a different MAC.

I'm surprised that works, as the lease file ought to keep things 
persistent across Dnsmasq restarts. Unless you're purging the lease file 
in between.

  -Tom

-- 
Tom Metro
Venture Logic, Newton, MA, USA
"Enterprise solutions through open source."
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