Date: Mon, 19 Aug 2013 07:00:01 GMT From: Julian Elischer <julian@elischer.org> To: freebsd-net@FreeBSD.org Subject: Re: kern/181388: [route] Routes not updated on mtu change Message-ID: <201308190700.r7J701I9045665@freefall.freebsd.org>
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The following reply was made to PR kern/181388; it has been noted by GNATS. From: Julian Elischer <julian@elischer.org> To: bug-followup@FreeBSD.org, joe@rewt.org.uk Cc: Subject: Re: kern/181388: [route] Routes not updated on mtu change Date: Mon, 19 Aug 2013 14:57:22 +0800 The problem is that this is not as simple as it seems. The route MTU MIGHT have been set by something other than the interface MTU in the first place. The interface MTU is a default for the route MTU but is not the only source. This actuall bit me a couple of days ago when I was wonderign why my interface was not sending 9K packets.. turns out you need to do 'ifconfig_xn0="DHCP mtu 9000"' in order to have your dncp configured interface routes have the right size. so, I'm agreeing with you , but noticing that there are complications.
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