Limiting addresses per user for users with more than one circuit-id

Chris Buxton clists at
Mon Dec 15 22:24:06 UTC 2014

On Dec 15, 2014, at 3:48 AM, Ilkka Virta <itvirta at> wrote:
> We have users (student apartments) who get addresses from DHCP, and we need to limit the number of addresses given to each user, so that nobody can hoard all the addresses in the network. We have a somewhat convoluted system in place for doing this, but I was thinking if it could be made simpler with the built-in limiting in dhcpd.

If you're interested in a commercial solution, we have one that does exactly what you're looking for.

Users can register a predetermined number of devices into the system. You would typically tie this to some kind of authentication system that you already have. Once a device is registered, it can get an IP address via DHCP as normal.

Unregistered devices can only get a lease from a quarantine subnet. If the device has a web browser (a computer, tablet, or phone, for example), the user can directly register the device from within this subnet. Otherwise, they have to use a device with a browser to register their other devices (such as a games console).

We have sizable university customers successfully using the solution.

Mail me off list if you would like more information.


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