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
```
{F1377563}
This is not allowed, because a VLAN on the same port can only be specific to one of `allow-vlan` or `native-vlan`.