When bridge VLAN filtering is active, network_get_physdev resolves
UCI interface names to the VLAN sub-interface (e.g. br-lanv0) rather
than the bridge master. LLDP frames use reserved multicast
(01:80:c2:00:00:0e) which bridges trap to member ports, so lldpd
must listen on the physical ports to receive them.
Detect when the resolved device is a sub-interface of a bridge and
expand it to the list of bridge member ports instead.
Signed-off-by: John Crispin <john@phrozen.org>
c9945c203a