p2p L2 media have the behaviour that you have shown in the debug output commands.
ethernet controllers implementation is different and a ping to the IP address of a local LAN based interface is not sent out on the wire:
ethernet is a broadcast and multicast capable L2 media, other media like a FR or ATM network may be multi access / multi point but they are not broadcast and multicast capable by themselves (they can use replication of a frame over different PVCs to emulate it, but it is a different matter).
years ago it was possible to use a PA 4 Eth or a a PA 8 eth to do tests on a C7500 or C7200 by simply disabling the keepalive function ( instead of creating additional loopback interfaces) I did it some times in some functional tests.
things are different for GE or 10GE ports that are not so easy to foul
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...