Date: Fri, 1 Feb 2002 09:47:02 -0800 From: "Crist J. Clark" <cristjc@earthlink.net> To: Alexey Luckyanchikov <alexl@alkar.net> Cc: freebsd-stable@FreeBSD.ORG, freebsd-net@FreeBSD.ORG Subject: Re: Weird path MTU autodiscovery problem in 4.5-RELEASE Message-ID: <20020201094702.P152@gohan.cjclark.org> In-Reply-To: <20020201125326.GA3036@alkar.net>; from alexl@alkar.net on Fri, Feb 01, 2002 at 02:53:26PM %2B0200 References: <20020201125326.GA3036@alkar.net>
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On Fri, Feb 01, 2002 at 02:53:26PM +0200, Alexey Luckyanchikov wrote:
> Hello,
>
> I have such network topology:
>
> +--------+ +--------+ +--------+
> | Server |<---- MTU 1500 ---->| Router |<---- MTU 1476 ---->| Client |
> +--------+ +--------+ +--------+
[snip]
> 14:06:48.682558 router > server: icmp: client unreachable - need to frag (mtu 1476) for server.7 > client.1371: [|tcp] (DF) (ttl 61, id 25428, len 1500) (ttl 253, id 2491, len 56)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Router say to server that he must to decrease packet size
Is "router" the same IP address that "server" has as the route to
"client?" That is, there aren't any aliases on "router's" interface
with "server" making problems?
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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