I have a malfunctioning link:
(router, nas) ==2.5gbe==(BPI R4 eth2) | lan1 ==1Gbe== desktop PC
Using Wireshark on desktop PC, I see a lot of LLC malformed packets from the NAS and router coming through, sometimes causing connection issues.
I got tcpdump installed on Openwrt, but is there any way to check if the LLC packet is already damaged at arrival on eth1, or damaged in bridge logic (bridger BPF), or sent out by lan1 in an improper way?
I got no idea how to debug this, so does someone have a clue?