freebsd security - Apr 2005 - Strange messages in dmesg after DDoS-attack.

Dear list,

A few days ago one of my machines were attacked by a DDoS-attack using UDP
on random ports.. When I later on analyzed the logs, I found this in my
dmesg:

xl0: initialization of the rx ring failed (55)
xl0: initialization of the rx ring failed (55)
xl0: initialization of the rx ring failed (55)

I tried to find out on google what it ment, but without any luck. What
does that mean and how can I correct it (if it's a problem of course).


Best regards,
Jesper Wallin

On Tue, 5 Apr 2005, Jesper Wallin wrote:
> Dear list,
>
> A few days ago one of my machines were attacked by a DDoS-attack using UDP
> on random ports.. When I later on analyzed the logs, I found this in my
> dmesg:
>
> xl0: initialization of the rx ring failed (55)
> xl0: initialization of the rx ring failed (55)
> xl0: initialization of the rx ring failed (55)
>
> I tried to find out on google what it ment, but without any luck. What
> does that mean and how can I correct it (if it's a problem of course).
>
>
> Best regards,
> Jesper Wallin
It means that we have a bug in the xl driver, probably nothing too 
serious.  Were there any other xl0 related messages, like "watchdog 
timeout"?

My guess is that we have a problem under high traffic conditions, and the 
DDoS would qualify as that.

Mike "Silby" Silbersack