@OliverB BTW, i'm getting exactly the same responses:
22:31:00.897158 6e:61:4d:af:d6:2c > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Request who-has 10.10.10.1 tell 10.10.10.2, length 28
22:31:00.897248 fe:1a:a1:78:1a:2e > 6e:61:4d:af:d6:2c, ethertype ARP (0x0806), length 42: Reply...