MAC address detection

Hi,

I have a NPM and IPAM module.

I would like to create an event (trigger or something) which will detect a new (unknown) MAC addresses on the network and send an email to the administrator (all MAC addresses on the network are listed in IPAM module).

Could you help me, how to do this (if is it possible)?

Does it exist some module or extension of Orion, which can help me, with this "feature" ?

thanks in advance