ARP(4) spoofing?

Brent Jones brent.jones at
Mon Mar 17 03:49:26 UTC 2008

> -----Original Message-----
> From: owner-freebsd-questions at 
> [mailto:owner-freebsd-questions at] On Behalf Of Modulok
> Sent: Monday, 17 March 2008 4:36 p.m.
> To: freebsd-questions at
> Subject: ARP(4) spoofing?
> Would this be ARP(4) spoofing, or is it just me? How would I 
> confirm it?
> arp: is on lo0 but got reply from xx:xx:xx:xx:xx:xx on em1
> last message repeated 18 times
> This is on a FreeBSD router, em1 is Internet-facing. (em0)
> is LAN facing and permanent entry in the arp cache. This happens
> constantly and is slowly filling my log files.
> Thoughts? Suggestions?
> -Modulok-

What does an "ifconfig -a" on your machine show?  It looks like you've
configured your loopback interface to also have


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