# nmcli con add type bridge con-name virtbridge ifname virt-br0

# nmcli con add type bridge slave con virtbridge-port1 name ifname enp0s25 master virt-br0

# nmcli con add type bridge-slave con-name virtbridge-port2 ifname virbr0-nic master virt-br0

# brctl show virt-br0 bridge name bridge id STP enabled interfaces virt-br0 8000.5254003504fe yes enp0s25 virbr0-nic