VLAN pass through

Hi all,

I'm a long time Tomato user on a wide selection of routers dating back to my WRT54g (what a legend), I'm currently running FreshTomato on 2 rt-ac56u's which are part of a larger network. My specific question is regarding Vlans which is something I've not worked, now I only really need the ac56u's to allow all vlan traffic to pass through, the management network is untagged but I need to pass vlans 30 and 50 through the ac56u's untouched.

Is this possible?

If so how? Apologies if...

VLAN pass through