Date: Tue, 10 Feb 2004 23:08:12 +0100 From: "=?ISO-8859-1?Q?Markus Dolze?=" <testuser1@mdolze.de> To: freebsd-net@freebsd.org Subject: FreeBSD's pppd and l2tpd: connection stalls Message-ID: <200402102208.i1AM8Cvg11314750@www802.verio.de>
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Hello, I have problems with net/l2tpd. The people at their mailing list can't help me and it seems to be a problem with pppd, so I write to the list. Situation: I'm using L2TP over IPsec to secure a wireless lan. The lan connection itself works fine. The IPsec connection works fine (transport mode). System: FreeBSD 5.2-RELEASE-p2 Problem: When I'm transfering a large file (it is *reproducable* with mozilla-source-1.6.tar.gz) transfer via ftp over the L2TP connection, the connections always stalls at the same point (number of transfered bytes). This also happens without IPSec. I had a look with ethereal at the L2TP traffic, L2TP packets are fine, but the ppp packets insist mostly of 0x00 and ethereal reports 'bad ppp content type'. The file contains a lot of 0x00 at the position the transfer stalls. L2tpd uses pppd for the ppp connection. I tried setting MRU and MTU, but that doesn't help much (the number of transfered byte grew about 100). Disabling VJ header compression seems to have positive effect, too. Questions: Are there any issues known with pppd 2.3.5? Any ideas? Can anybody verify this? Regards Markus Dolze
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