Date: Fri, 22 Feb 2002 20:26:52 +0900 From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= <jinmei@isl.rdc.toshiba.co.jp> To: Bart Matthaei <bart@dreamflow.nl> Cc: freebsd-net@FreeBSD.ORG Subject: Re: mtu on gif devices Message-ID: <y7vd6yxlptv.wl@condor.jinmei.org> In-Reply-To: <20020207220346.I68508@heresy.dreamflow.nl> References: <20020207220346.I68508@heresy.dreamflow.nl>
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Sorry for the delayed response, >>>>> On Thu, 7 Feb 2002 22:03:46 +0100, >>>>> Bart Matthaei <bart@dreamflow.nl> said: > The weird thing is, though, that since i've upgraded to 4.5, ssh > connections from my irix and bsd box in my network (which have > public ip's tunneled from work) die spontaniously. They either die > when i give it a lot of input, or when i idle for a bit. It smells > like a mtu problem to me, but i can't find the problem. > When i ssh directly from my router trough the tunnel to work, i get a > stable connection, so i figured the home-router itself is the source > of the problem. > Set up is like this: > colo (gif with mtu 1500) -> gif tunnel -> home-router (gif with mtu > 1500/ interfaces with mtu 1500) -> irix box (mtu 1200) / bsd box (mtu > 1500). > Both the irix and bsd box have the problem. > The problem was also occuring when the mtu of both gif devices were > set to 1280. > It all started when i upgraded my home router from 4.4 to 4.5. How did you configure (particularly the default) routes on the host "colo"? I've seen several reports that the default route on a tunnel link has somehow become bogus. BTW: if the problem happens regardless of the MTU value, the MTU setting may not be the reason. JINMEI, Tatuya Communication Platform Lab. Corporate R&D Center, Toshiba Corp. jinmei@isl.rdc.toshiba.co.jp To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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