arplookup failures

Our messages log file is getting flooded with arplookup failed messages:

servername kernel: arplookup XX.XXX.X.X failed: host is not on local network

There are 2 ip addresses that appear in the failure messages, one is a monitoring server that monitors the online status of our server and the other ip is from a DNS server. Both are on different subnets than our server's ip range. I can ping and traceroute both servers. All of our server's ip addresses are on the same subnet.

'route monitor' produces several messages each time an arplookup failure is logged like:

got message of size 140 on Mon Feb 6 13:58:45 2006
RTM_REDIRECT: Told to use different route: len 140, pid: 0, seq 0, errno 51, flags:<GATEWAY,HOST,DONE>
locks: inits:
sockaddrs: <DST,GATEWAY,AUTHOR>
DNSSERVERIP DNSSERVERIP OURSERVERSGATEWAYIP

where DNSSERVERIP and OURSERVERSGATEWAYIP are the ip addresses of the dns server and our gateway.

We used to get an arplookup error once in a while but the datacenter made some firewall changes recently and ever since our messages file is just getting hosed with the arplookup complaints. The datacenter is not able to help us out and after many hours of google research & unsuccessful testing, I'm looking for any info that will help pin down the problem. Any info would be greatly appreciated.

 

 

 

 

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