I have a problem with one of our solaris servers, an arp table entry is changing every so often for one of the other servers (WINSERVER) on the network.
It will start out with the correct MAC address for WINSERVER (10.10.10.1) but it is being replaced by other mac addresses which belong to servers 10.10.10.15 and 10.10.10.29.
The only way to get the correct mac address is to delete the arp entry for WINSERVER and it will discover the correct mac address again for a limited time.
All servers are on the same network so no routers are involved.
What could be causing this?