Help me understand the following network log message

[blazingice]

I often see the following logs in my home server. Although I have a number of jails and vms in my home server the IPs seem to be referring to other devices.

How do I interpret these logs? Is it something to worry about?

server.home kernel log messages:
+arp: 192.168.0.68 moved from 66:b7:01:78:f9:0e to 3a:52:a1:4a:f8:94 on vnet0
+arp: 192.168.0.202 moved from 3a:52:a1:4a:f8:94 to 66:b7:01:78:f9:0e on vnet0
+arp: 192.168.0.68 moved from 3a:52:a1:4a:f8:94 to 66:b7:01:78:f9:0e on vnet0
+arp: 192.168.0.68 moved from 66:b7:01:78:f9:0e to 3a:52:a1:4a:f8:94 on vnet0
+arp: 192.168.0.202 moved from 3a:52:a1:4a:f8:94 to 66:b7:01:78:f9:0e on vnet0
+arp: 192.168.0.202 moved from 66:b7:01:78:f9:0e to 3a:52:a1:4a:f8:94 on vnet0
+arp: 192.168.0.202 moved from 3a:52:a1:4a:f8:94 to 66:b7:01:78:f9:0e on vnet0
+arp: 192.168.0.202 moved from 66:b7:01:78:f9:0e to 3a:52:a1:4a:f8:94 on vnet0
+arp: 192.168.0.202 moved from 3a:52:a1:4a:f8:94 to 66:b7:01:78:f9:0e on vnet0
+arp: 192.168.0.68 moved from 66:b7:01:78:f9:0e to 3a:52:a1:4a:f8:94 on vnet0

 

[Barney]

It means you have more than 1 device using the same IP address.