My network uses static IP addresses and has a router. I used wireshark to detect a lot of arp requests from a single system, which seems to be running abnormally to me.
As I'm new to wireshark I don't know how to solve this problem. Please Help.
Here's a screenshot:
Is this behavior normal?
Its ip address is 10.0.0.6 and routers ip is 10.0.0.1
P.S. earlier rsyslog was configured on the system which sent logs to the system at the ip address 10.0.0.5
As Oli said depends on the services you have on your system that has ip 10.0.0.6.
ARP traffic is quite normal, in your screenshot I can see only you system trying to contact 3 IP address (10.0.0.2, 10.0.0.12 and 10.0.0.11) in a perfect and the correct way (also repetitions are normal).
Here some slides on ARP proto: http://netgroup.polito.it/teaching/cn/arp_E_A_3x.pdf
Probably on your system there is a service that "scans" the network.
The problem is that you cannot use WireShark to find witch is the service that produce this probes as WS works at network layer.
I suggest the use of "netstat -an" on the 10.0.0.6 system to detect all the services running on it.