Most of our clients are small businesses that cannot justify having redundant Active Directory servers on site. If their lone AD server goes down, they lose all DHCP and DNS functionality. It would be very nice to have a DHCP time delay option on the Peplink Balance that would not respond for several seconds after the initial request so that Active Directory is always primary DHCP, but in the event of a server outage, we could have a separate pool of addresses enabled on the Peplink that could be handed out to permit Internet-only access during the server downtime. We would set the lease time to be very short (10 minutes?) to force clients to renew their lease and restore domain connectivity in short order after the server is back in service.