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Date: Fri, 20 Jul 2007 11:35:15 -0700
From: Julian Elischer <julian@elischer.org>
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To: Eli Dart <dart@es.net>
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Cc: freebsd-net@FreeBSD.org
Subject: Re: 6.2 mtu now limits size of incomming packet
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Eli Dart wrote:
> 
> 
> Stephen Clark wrote:
> 
>>>
>> So was any decision reached on this issue - will FreeBSD changed to 
>> accept a packet on an
>> interface that is larger than the mtu on that interface?
> 
> If possible, I'd like to see the ability to enforce interface MTU for 
> received packets preserved in a sysctl if it is removed for the default 
> config...  In other words, something like:
> 
> net.link.mtu_limits_received_pktsize = 0|1
> 
> Then, default it to 0 to preserve 4.x behavior.

what would this achieve?

Answering himself.. it MAY allow a driver to optimise a bit by not needing to cope
with the posibility of receiving jubo packets?
I can not think of any other reason.. 
(except to break networks that are apparently working fine).

> 
> Thanks,
> 
>         --eli
>