"Leafs do not respond to pings because they're not accepting incoming connections."
but is it true that their super peers should act as a proxy and respond with a ping in the behave of the shielded leaf node? for example, if node S is a super node(ultra peer), nodes A,B,C are leaf nodes shielded by the S. Then if i am pinging node S, S will reply with a pong representing itself, and also one pong for each of A,B,C ?
THanks