This is what I’m getting in my cap-ac.
A able to ping B (and vice versa)
A able to ping C (and vice versa)
A, B & C able to ping HAP-AC2 and CAP-AC
B cannot ping C (and vice versa). The message is “destination host unreachable”

If A, B & C are clients of HAP-AC2, they can ping each other. If they are clients of CAP-AC they cannot ping each other. Same subnet, same ip address.
What setting am I missing.