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Date: Sun, 01 Oct 2006 12:42:50 -0600
From: Scott Long <scottl@samsco.org>
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To: Martin Nilsson <martin@gneto.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: 6.2 SHOWSTOPPER - em completely unusable on 6.2
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Martin Nilsson wrote:
> Just an observation.
> 
> All the boxes I've had this problem on have _two_ em interfaces. I have 
> never seen it on my boxes with just one em NIC.
> 
> The error is always em0 timeout - never em1 (I haven't seen any!)
> 
> Yesterday my local network got completely wacky, the gateway had em0 
> timeouts on the screen: but em0 is the _outside_ the windows box that I 
> had to reboot was attached to the inside on em1!
> 
> Could there be something wrong in the driver if we have more than one em 
> interface?
> 
> Regards,
> Martin

Multiple instances of the driver have no knowledge of each other.
Nothing between them is shared.  Even if they share an interrupt,
it is a detail that is hidden.

Scott