Linux Hint published a tutorial about creating a CentOS 8 KVM networked bridge interface.

How to Create a CentOS 8 KVM Networked Bridge Interface

A network bridge is like a virtual network router or a switch. You can connect one or more network interfaces to your network bridge. A private network bridge is like a virtual router. It assigns itself a private IP address and creates a DHCP server. A public network bridge is like a virtual switch. You can connect one physical network interface to the bridge. In this article, how to create private and public KVM network bridges on CentOS 8 is explained.

How to Create a CentOS 8 KVM Networked Bridge Interface – Linux Hint