[Bug 254341] igb hung every 5-20 hours. ifconfig down+up solves the problem for next N hours

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254341

--- Comment #16 from Kevin Bowling <kbowling@freebsd.org> ---
(In reply to Vladislav Shabanov from comment #13)
There are a lot more changes so it is worth a shot
https://www.supermicro.com/Bios/softfiles/14136/X10SRi-F_BIOS_3.4_release_notes.pdf,
supermicro is not good about changelogs in general. 

There is nothing in the provided data that stands out to me so far.  What is on
the other side, and why forcing 100 FDX?  Is NC-SI (shared BMC port) in use or
are you using the dedicated port? 

I will work on a patch to log the eeprom/nvm version so we can correlate issues
to Intel's public specification update document
http://iommu.com/datasheets/e1000-datasheets/333066%20-%20I350_SpecUpdate_Rev3.1.pdf
and don't have any other clues or suggestions at the moment.

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