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Lets have an understanding of how DHCP works.

In the world of TCP/IP the term host refers to any device with an IP address You computer, phone, tablet, printer, router, switch etc.
No matter the type of host, any host that uses IPv4 needs four IPv4 settings
■ IP address
■ Subnet mask
■ Default Gateway
■ DNS server IP addresses

We will start our discussion with DHCP – Dynamic Host
Configuration Protocol

DHCP is Client/Server model.
DHCP is a UDP based protocol.
Host acts as a client, and DHCP server acts as server.
Port Number : Server – 67 Client – 68
DHCP uses the following four messages between the client and server
Discover: Sent by the DHCP Client to find a willing DHCP Server
Offer: Sent by a DHCP server to offer to lease to that client a specific IP address (and inform the client of its other parameters)
Request: Sent by the DHCP client to ask the server to lease the IPv4 address listed in the Offer message
Acknowledgment: Sent by the DHCP server to assign the address and to list the mask, default router, and DNS server IP addresses

The DHCP hosts do not have any IP at the beginning still it can send and receive IP packet with the help of :
0.0.0.0: An address reserved for use as a source IPv4 address for hosts
255.255.255.255: The local broadcast IP address. Packets sent to this destination address.