arplookup failed - filling log files

From:	"Thompson, Andrew" <andrew at fernico dot com>
To:	"m0n0wall at lists dot m0n0 dot ch" <m0n0wall at lists dot m0n0 dot ch>
Subject:	arplookup failed - filling log files
Date:	Tue, 5 Jul 2011 12:16:00 +0100

kernel: arplookup 192.168.0.1 failed: host is not on local network

My m0n0wall log files are being filled with the above, but I have no idea why? Any suggestions?

Thanks