Hello,
In https://www.open-mesh.org/projects/batman-adv/wiki/Faq#VLAN-forwarding-doesn... it is stated that batman advanced will only forward vlan frames when it knows about the vlan. However this seems only to be true for 802.1q vlans. I was able to send 802.1ad tagged frames over the mesh without configuring any vlans on top of the soft interface. I am using batman-adv 2022.0-openwrt-6. When I try the same with 802.1q it behaves as described in the wiki page. This may be be problematic when people rely on batman advanced not forwarding vlan tagged frames.
Kind regards, pony