|  | 11.2 | Network-to-Network Communications
| 11.2.2 | DHCP initialization sequence
When a DHCP client boots, it enters an initialize state. It sends DHCPDISCOVER broadcast messages, which are UDP packets with the port number set to the BOOTP port. After sending the DHCPDISCOVER packets, the client moves into the select state and collects DHCPOFFER responses from DHCP server. The client then selects the first response it receive and negotiates lease time (the length of time it can keep the address without renewing it) with the DHCP server by sending a DHCPREQUEST packet. The DHCP server acknowledges a client request with a DHCPACK packet. The client can now enter the bound state and begin using the address.