Hey Steffen,

Sorry to hear about your system reset problem.  Since you're not seeing 
anything in the system logs is you thinking that the NIC's are involved due to 
the frequency of the failures seems to correspond to amount of system traffic?  
I'm asking as in my 7 years of maintaining the ixgbe driver this failure state 
is new to me.  You could try loading the latest Source Forge driver verify this 
still fails with a slightly more recent driver, but really there shouldn't be 
much in the way for differences and nothing I would expect to correct this sort 
of failure.  It almost sounds like a power issue, the way the system resets 
without even logging the problem, is your system BOIS up to date? 

I know this isn't much in the way of help, but you have me at a bit of a loss 
on how the NIC could lead to this sort of immediate system reset.

Thanks,
-Don Skidmore <donald.c.skidm...@intel.com>

> -----Original Message-----
> From: Steffen Weber [mailto:steffen.we...@gmail.com]
> Sent: Tuesday, December 08, 2015 5:03 AM
> To: e1000-devel@lists.sourceforge.net
> Subject: Re: [E1000-devel] ixgbe and using iptables/SYNPROXY causes
> random system resets
> 
> Hi,
> 
> we have exactly the same problem with the combination of SYNPROXY and
> X520 NICs. We use Dell PowerEdge R420 servers.
> 
> CPU: Intel(R) Xeon(R) CPU E5-2430
> NIC: Intel Corporation Ethernet 10G 2P X520 Adapter (rev 01)
> Kernel: Linux 4.1.13 with in-tree ixgbe 4.0.1-k
> 
> One of those servers with relatively constant TCP traffic on ports 80 +
> 443 has rebooted three times, each time after about 3 days of uptime.
> Another server with less constant traffic has rebooted after 7 days. Two
> other servers with way less network traffic did not reboot within 7 days.
> 
> There is nothing in the logs when the reboots happen.
> 
> We've just updated the NIC firmware from version 16.0.21 to version
> 16.5.20 but according to the changelog supplied by Dell this probably won't
> fix the problem. (I'll let you know in a few days.)
> 
> http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverI
> d=6FD9P
> 
> Is there anything we can do?
> 
> Thanks,
> Steffen
> 
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