Tcpdump showing ghost traffic

[Thomas Sevestre]

Le 21 oct. 10 à 19:04, Julian Elischer a écrit :

> On 10/21/10 8:26 AM, Thomas Sevestre wrote:
>> Hi all,
>>
>> I'm using freebsd 8 as a router. Say I have a sis0 interface. The  
>> interface is up and negociated, Ethernet LEDs are fine.
>> Sometimes tcpdump shows traffic on the interface (tcpdump -lni  
>> sis0) but traffic LEDs doesn't blink and there is nothing going out  
>> of the router.
>>
>> Do you have any idea of what the problem could be?
>> May be a link-layer driver bug?
>
> who is the traffic for and from?

For instance, the router is pinging some address on his LAN. In this  
case I had a machine wired directly to the router.
By the way, it is not a firewall issue, packets wasn't blocked.

>
>>
>> Thanks,
>> Thomas
>>
>>
>>
>>
>>
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>
>