Date: Fri, 20 Jul 2007 11:35:15 -0700 From: Julian Elischer <julian@elischer.org> To: Eli Dart <dart@es.net> Cc: freebsd-net@FreeBSD.org Subject: Re: 6.2 mtu now limits size of incomming packet Message-ID: <46A10063.9010902@elischer.org> In-Reply-To: <20070720172021.8EA3D13C4B3@mx1.freebsd.org> References: <200707150237.l6F2bAgZ011098@redrock.karels.net> <469E0FFF.8070802@seclark.us> <20070720172021.8EA3D13C4B3@mx1.freebsd.org>
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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 >
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