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Date: Thu, 01 Sep 2005 11:08:19 -0400
From: Chuck Swiger <cswiger@mac.com>
Organization: The Courts of Chaos
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To: Bryan Albright <bryana@darth-vader.org>
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Cc: freebsd-questions@freebsd.org
Subject: Re: How can I stop "discard oversize frame" errors?
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Bryan Albright wrote:
[ ... ]
> fxp0: discard oversize frame (ether type 800 flags 3 len 1573 > max 1514)
> fxp0: discard oversize frame (ether type 800 flags 3 len 1533 > max 1514)
> fxp0: discard oversize frame (ether type 5555 flags 3 len 1520 > max 1514)
> fxp0: discard oversize frame (ether type 800 flags 3 len 1564 > max 1514)
> 
> I have 2 NICs in my machine, both intel etherexpress pro:

Try setting an mtu of 1450 or so.  You can add that to the ifconfig lines in 
/etc/rc.conf, or run "ifconfig fxp0 mtu 1400" directly.

-- 
-Chuck