netdev - Problems with tg3 driver after lowering the MTU

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Date:	Thu, 21 Jan 2010 16:21:47 +0100
From:	Szilveszter Ordog <slipszi@...il.com>
To:	netdev@...r.kernel.org
Subject: Problems with tg3 driver after lowering the MTU

After the MTU is lowered (e.g. to 1420) on a tg3-driven interface,
received packets larger than that (e.g. 1500 bytes) are silently
discarded by the driver. Therefore the system doesn't send ICMP
fragmentation-needed packets and the other side doesn't detect this
condition.

Is this a known bug?

slipszi
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