From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frank Cusack Date: Tue, 03 Feb 2004 14:33:23 +0000 Subject: Re: ppp-2.4.2 released Message-Id: <20040203063323.A12218@google.com> List-Id: References: <16391.33929.908463.444449@cargo.ozlabs.ibm.com> In-Reply-To: <16391.33929.908463.444449@cargo.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ppp@vger.kernel.org On Tue, Feb 03, 2004 at 01:17:56PM +0200, Pasi K?rkk?inen wrote: > I'm not sure what is the correct behaviour, but www.yle.fi doesn't send > shorter packets than mss+headers (mss told by the client). That's incorrect on behalf of www.yle.fi. The client can never know the PMTU in the server->client direction. Even in the client->server direction, it can change during the lifetime of a connection. Read the RFC I mentioned. When doing PMTU-D, one must not clamp the segment size to the MSS. > So either pppd is broken, or www.yle.fi tcp/ip stack is broken.. The latter. /fc