Did you read here https://wiki.mikrotik.com/wiki/Manual:IP/ARP#Summary
Also, on proxy-arp the photo missing is this one here http://forum.mikrotik.com/t/connect-host-between-eth/65330/1 might help you understand
Did you read here https://wiki.mikrotik.com/wiki/Manual:IP/ARP#Summary
Also, on proxy-arp the photo missing is this one here http://forum.mikrotik.com/t/connect-host-between-eth/65330/1 might help you understand