DHCP server

Sometimes, you need a simple source DHCP-service functionality to add it to my project, not to use for this high-grade DHCP server. For example, the local network, there is a master server DHCP, which allocates IP-addresses of the computers, and there is also a small server DHCP, which allocates a certain IP-address only the specific device. Since DHCP-protocol works through UPD, the data can be sent to broadcast (rather than point-to-point), respectively, and to catch them online easily. To do this, we will vospollzuemsya simple filtering algorithm that will filter requests and provide only the IP-address MAC-address-resolved.