linux-kernel - Re: [PATCH 2/2] [e1000 VLAN] Disable vlan hw accel when promiscuous mode

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Message-Id: <20071112.151923.77768525.davem@davemloft.net>
Date:	Mon, 12 Nov 2007 15:19:23 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	w@....eu
Cc:	cfriesen@...tel.com, kaber@...sh.net, auke-jan.h.kok@...el.com,
	joonwpark81@...il.com, netdev@...r.kernel.org,
	djohnson+linux-kernel@...starentnetworks.com,
	linux-kernel@...r.kernel.org, e1000-devel@...ts.sourceforge.net
Subject: Re: [PATCH 2/2] [e1000 VLAN] Disable vlan hw accel when
 promiscuous mode

From: Willy Tarreau <w@....eu>
Date: Tue, 13 Nov 2007 00:15:16 +0100

> I can say that sometimes you'd like to be aware that one of your
> VLANs is wrong and you'd simply like to sniff the wire to guess the
> correct tag. And on production, you simply cannot remove other
> VLANs, otherwise you disrupt the service.

If you were plugged into the wrong physical switch, how might
you debug that problem in production? :-)

Really, it's the same issue, just virtualized, as in the name
for the feature, VLAN.
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