Yes, but it is not enough. You also have to set pvid=5 on the /interface/bridge/port row for ether1. You can leave the untagged list empty in the above window because ether1 will be added to it automatically as you do the previous step, but you must add also the bridge to the tagged list for VLAN 5 - see here why. To make these settings actually work, you have to set vlan-filtering on the bridge to yes. And finally you have to attach an /interface/vlan to the bridge and move the ..210.41/24 from ether1 to this /interface/vlan.