DHCP SERVER_PORT is the port used by a DHCP server to listen for and respond to DHCP requests from client devices. The default port number for DHCP servers is 67, but it can be configured to use a different port if necessary. When a client device sends a broadcast message requesting an IP address, the DHCP server responds with an offer of available addresses and other configuration information, such as subnet mask, gateway address, and DNS server addresses. The communication between the DHCP server and client uses User Datagram Protocol (UDP) packets over the network.
![Micrel KSZ8081 or KSZ8091 2188000.ethernet-1:02: attached PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=2188000.ethernet-1:02, irq=POLL)](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162224509509129.png)
