DoS by small packets: eth0: Too much work at interrupt, IntrStatus=0x0001.

[Milan Keršláger <milan kerslager pslib cz>]

Hi,

I have a trouble with DoS attacks to one internal machine through RHEL3
router. It seems that a lot of small packets causing DoS (100Mbps links)
on my router even I shut down my firewall rules.

The machine has two RTL8139C cards. I tryed 3C905 cards with no luck.
Just after plugging UTP cable into the machine the system slow down and
freeze until UTP has been unplugged.

Is there a chance to avoid this problem? Is it know bug?

I see a lot of lines with this error message in dmesg output:

eth0: Too much work at interrupt, IntrStatus=0x0001.

-- 
                        Milan Kerslager
                        E-mail: milan kerslager pslib cz
                        WWW:    http://www.pslib.cz/~kerslage/