arplookup failed: host is not on local network

Derek Ragona derek at
Mon May 12 21:32:55 UTC 2008

At 03:44 PM 5/12/2008, Christer Solskogen wrote:
>Derek Ragona wrote:
>>You may want to do traceroutes from the systems that do find the 
>>interface.  I would bet you have a default route and/or netmask sending 
>>the traffic.  You will get those arp messages if you run two different 
>>interfaces on the same system, on the same subnet (not to be confused 
>>with running multiple IP's on an interface.)  Arp tries to tie an IP 
>>address to a machine address, but if the reverse routing isn't correct 
>>you will see these error messages.
>A tip from George Davidovich setting the aliases to use netmask to 
>0xffffffff seems to fix the problem.

Yes aliases should have a netmask of


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