Network Bridge
Physical
Is a networking device that connects the larger LAN networks with the group of smaller LAN networks. Have the control of which packages allow to go through.
Virtual
Virtual network device behaves like a Virtual Switch (vSwitch). It's like a Network Switch that other devices can talk to each other.
Network bridge - ArchWiki (archlinux.org)
There are multiple options for virtualised devices to talk to each other. The two commons are:
- Linux bridge
- Open vSwich Virtual Switch (vSwitch)