I have question for those of you, who use DHCP server on RouterOS platform (or maybe to RouterOS developers). All my servers are configured to give clients 1d long leases. Sometimes I see clients, mostly Windows machines, with short, 30 second lease time. After this short time the client lease disappears from leases. Where does this time come from? Is this a time when server sends DHCP OFFER and is waiting for DHCP REQUEST from client? Client, for some reason, doesn't send DHCP REQUEST package, that is why server removes this lease? I need some short explanation .
BTW, I use DHCP server with Radius authentication.