I found below note in cisco white paper i.e 739989 - end point learning but unable to understand it.
"An exception exists for remote MAC address learning when a packet is incoming from L3Out to Cisco ACI. If ARP traffic is coming from an L3Out SVI rather than a routed-port sub-interface, ARP traffic is flooded to other leaf switches with the same L3Out SVI. This behavior could cause remote MAC address learning on another border leaf switch."
What is the meaning of other leaf switches here? doesn't he referring to border leaf?
and how the another border leaf switch will learn it?