collver@softhome.net writes:
> arplookup: unable to enter address for 206.112.107.120 (host is not on local network)
> 
> Does this mean that someone inside my network tried to modify the arp table
> but failed because the IP address was outside my network?

You forgot to mention your IP address.

It most likely means that someone else on the ethernet is either
mis-configured or intentionally using a different network address.
Ignore it.

-wolfgang
-- 
       Wolfgang Rupprecht <wolfgang+gnus@dailyplanet.wsrcc.com>
		    http://www.wsrcc.com/wolfgang/
Coming soon: GPS mapping tools for Open Systems. http://www.gnomad-mapping.com/