If an interface is a bridge member, and a vlan(4) is also created on that interface, and net.link.bridge.member_ifaddrs=0, then vlan(4) will never see any incoming frames because bridge doesn't pass them to the host for processing. Work around this by checking for locally-addressed frames using the MAC address of the interface we received the frame on, but only if the frame has a .1q tag and there's a vlan trunk on the interface. This behaviour is almost certainly "wrong" and it's not clear if we really want to support this, but it did work in the past and the member_ifaddrs change was not supposed to break it, so this restores the previous behaviour. PR: 287150 MFC after: 1 week Reviewed by: kevans, des Approved by: kevans (mentor), des (mentor) Differential Revision: https://reviews.freebsd.org/D50623