I use a vlan-aware bridge on a Proxmox VE 6.1 system with a following network configuration:
auto vmbr0
iface vmbr0 inet manual
bridge-ports eno7
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094
bridge-pvid 1
mtu 9000
However, my NIC (Intel X722...