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Date:	Thu, 07 Feb 2008 07:19:16 +0100
From:	Johan Andersson <>
To:	"Kok, Auke" <>
Subject: Re: e1000e: Hardware CRC stripping doesn't work with 82566DM-2

Kok, Auke wrote:
> Johan Andersson wrote:
>> Hi,
>> In commit 140a74802894e9db57e5cd77ccff77e590ece5f3 a workaround for crc
>> stripping was removed.
>> However, the hardware supported crc stripping now in use doesn't seem to
>> work with the following chip:
>> Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02) (8086:10bd)
>> I discovered this while trying to make this nic member of a bridge.
>> Since some frames get too large for the bridge they are dropped, making
>> it impossible to use this nic in a bridge.
>> Reverting this commit makes the nic and brigde work again.
>> Are there any more chips in this family suffering from this?
> I have only heard from this issue for 82566dm-2 chipsets, but I'm looking into it
> atm (time permitting). It has been reported by Herbert Xu to cause issues in the
> same matter last week.
> I'm not sure what the real issue is right now, I hope to get an answer on this later.
> Auke
Ok, thanks. Tell me if I can help out in any way.

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