Hello, once my server starts the viifbr0 bridge, my physical host (physical server) will not be able to access any network connections and dns resolution under SSH. As for the virtual machine, I haven't tried it yet, but there is a high probability that I will not be able to access the network.
My physical server uses dhcp working mode. The machine is directly connected to the modem using a network cable. The IP address will be reassigned every time the modem is started, so there is no way to directly set a static IP and fixed gateway on the physical server.