Due to the lack of validation logic, when the following illegal command is executed
set interfaces ethernet eth0 set interfaces bridge br0 enable-vlan set interfaces bridge br0 member interface eth0 allow-vlan 1 set interfaces bridge br0 member interface eth0 native-vlan 1 commit
This is not allowed, because a VLAN on the same port can only be specific to one of allowed-vlan or native-vlan.