[c-nsp] arps and "it's our address" ?

[Peter Rathlev]

Hi,

On Mon, 2008-06-09 at 11:51 -0400, Tuc at T-B-O-H.NET wrote:
<cut>
> He did a "debug arp" and found this :
> 
> 002005: .Jun  9 10:44:12.348 EDT: IP ARP: creating incomplete entry for
>  IP address: 192.168.25.2 interface GigabitEthernet0/1
> 002006: .Jun  9 10:44:12.348 EDT: IP ARP: sent req src 192.168.25.1
>   0016.9d4e.9861, dst 192.168.25.2 0000.0000.0000  GigabitEthernet0/1
> 002007: .Jun  9 10:44:12.348 EDT: IP ARP req filtered src 192.168.25.1
>  0016.9d4e.9861, dst 192.168.25.2 0000.0000.0000 it's our address
<cut>
> He wanted me to post this and ask if anyone has an idea why its saying
> that. Googles lead him to believe there is a MAC address duplication
> somewhere.

It looks more like a loop of some kind. Does spanning tree say anything?
I don't think it's a duplicate MAC, since it exactly the ARP request
that comes back.

Regards,
Peter