Kernel log message

From: William Wallace (ww@austin.rr.com)
Date: 10/13/02 

From: "William Wallace" <ww@austin.rr.com>
To: "FreeBSD Security" <freebsd-security@FreeBSD.ORG>
Date: Sat, 12 Oct 2002 19:37:33 -0500

> Could someone explain to me what the following log message means:
>
> disco.wwallace.net kernel log messages:
> > arp: 192.168.100.2 moved from 00:20:78:0d:5a:7f to 00:00:78:0d:5a:7f on
> de0
> > Oct 5 08:03:57 disco /kernel: arp: 192.168.100.2 moved from
> 00:20:78:0d:5a:7f to 00:00:78:0d:5a:7f on de0
>
> The machine in question (192.168.100.2) is a Windows 2000 machine that has
> had the same NIC for years. Also, only one of the digits in the MAC
> address seems to have changed. What could cause this?
>
> Thanks,
> - William.
>
>

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