Incomplete ARP entries

RouterOS General
1

I’m running ROS6.41.3 and I’m seeing alot of incomplete arp entries
19 D 172.17.2.165 brNetwork-Wlan
20 D 172.17.2.192 brNetwork-Wlan
21 D 172.17.2.148 brNetwork-Wlan
22 D 172.17.2.187 brNetwork-Wlan
23 D 172.17.2.176 brNetwork-Wlan
24 D 172.17.2.196 brNetwork-Wlan
25 D 172.17.2.185 brNetwork-Wlan
26 D 172.17.2.149 brNetwork-Wlan
27 D 172.17.2.200 brNetwork-Wlan
28 D 172.17.2.166 brNetwork-Wlan
29 D 172.17.2.195 brNetwork-Wlan
Given these IP addresses are not active on a host why would the router even have incomplete arp entries?
When I clear them they come back
Anyone got any thoughts

2

http://forum.mikrotik.com/t/ip-with-no-mac-address-ip-arp-tab/100030/1

try use arp reply only on the interface and set add arp to lease on your DHCP server. this way only devices that gets DHCP IP address is addd to the arp table. AKA, devices use static IP won’t be able to connect.

3

Thanks Solar77
I was just concerned I might have misconfigured something. Once this is confirmed as the expected operation of the device I’m happy.