"VLAN aware" checkbox has no function

I've setup a new 8.1.3 proxmox cluster and was kind of surprised that my VM using a tagged VLAN had network connection, even though "VLAN aware" was not ticked on the bridge interface. Did a few tests and it seems that this checkbox has absolutely no impact, whether or not VLANs are passed through to the VMs. I can tag VLANs inside a guest OR on the VMs virtual NIC and it's working perfectly fine, even with VLAN aware unchecked.

Did i completely missunderstand something regarding the "VLAN...

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