What are the source and destination IP addresses in this Discover packet request? Why are these the addresses used?

8] X X Topology View List View Manifest Graphs client-1 client-2 gateway 2022-10-13 19:12:05 (2.29 MB/s) - `/etc/dnsmasq.conf' saved [138/13 X sv825@gateway:~$ sudo service dnsmasq restart sv825@gateway:~$ sudo tcpdump -i eth1 -n -e -v "udp port 67 or udp port 68" Vendor-rfc1048 Extensions Magic Cookie 0x63825363 tcpdump: listening on ethl, link-type EN10MB (Ethernet), capture si ze 262144 bytes 19:13:37.249135 02:6d:72:b4:52:43 > ff:ff:ff:ff:ff:ff, ethertype IP v4 (0x0800), length 342: (tos Ox10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328) 0.0.0.0.68> 255.255.255.255.67: BOOTP/DHCP, Request from 02:6d :72:b4:52:43, length 300, xid 0x6e0bc362, Flags [none] Client-Ethernet-Address 02:6d:72:b4:52:43 DHCP-Message Option 53, length 1: Discover Hostname Option 12, length 8: "client-1" Parameter-Request Option 55, length 13: Subnet-Mask, BR, Time-Zone, Default-Gateway Domain-Name, Domain-Name-Server, Option 119, Hostname Netbios-Name-Server, Netbios-Scope, MTU, Classless-St