Port status data incorrect or do i have a swtich issue?

See here:

and I add: since it's a switch, the traffic doesn't pass the kernel by design. I don't know where the numbers come from, some switches provide per-port statistics that can be fetched. The old swconfig tool showed per-port packet counters, the DSA implementation might or might not be able to fetch it.

On my ipq40xx device, I also have a mismatch of a few GiB that I can't explain with pure wireless traffic. On my realtek-switches, only the traffic to the switch seems to be counted, i.e. I only see a few kB per port.

That said: Your port lan2 seems to be part of four different zones (four different colors), what happens with this traffic on the device?