Trunk port to guest

Proxmox does VLANS a little different than I am used to. VLANS are assigned on a per-machine basis, not on a per-interface/per-logical-grouping-identifier [I.E. "port-group"]. Now this works just fine for 1:1 interface-to-vlan mapping, but where I run into issues is how to configure a guest to have 1 logical interface as a 802.1q trunk port. In some situations I'd also like this interface to trunk to the outside world, as well as have other guests access VLANS originating from it, internally.

In vmware I just set to vlan 4095 and whatever machine I assign an interface in that port group has a trunk. Basically I am looking for a way to do this with proxmox.


Thanks in advance