From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guy Rouillier Date: Sat, 06 Nov 2004 05:03:51 +0000 Subject: ppp_mppe osize issue Message-Id: <20041106000351.3d60f2ba@emach> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ppp@vger.kernel.org (I sent this earlier this week under the subject "osize too small" and now realize that most spam filters probably kicked it out. Resending... I'm using ppp with pptp to connect to a MS server at work. Kernel is 2.6.3 AMD64 on Mandrake 10.0, ppp 2.4.2. I built this kernel myself to fix the 64-bit issues with ppp (fix previously reported.) When I have VPN up and run a browser, it will retrieve a particular page fine the first time. However, if I click the submit button on that page again (which transmits a bunch of data - I authored this page so know all about it) the browser just goes into continuous wait and never actually transmits anything. I see the following in dmesg: PPP generic driver version 2.4.2 ppp_mppe: module license 'BSD without advertisement clause' taints kernel. PPP MPPE Compression module registered Module ppp_mppe cannot be unloaded due to unsafe usage in include/linux/module.h:503 mppe_compress[0]: osize too small! (have: 1400 need: 1404) ppp: compressor dropped pkt mppe_compress[0]: osize too small! (have: 1400 need: 1404) ppp: compressor dropped pkt What is the appropriate fix for this? ifconfig shows an MTU of 1396 for ppp0. I tried specifying mtu 1500 when starting pppd, but it still ends up 1396. I suppose the server end is constraining it. Appreciate all suggestions - I can rebuild the kernel if necessary. -- Guy Rouillier