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List:       poptop-server
Subject:    Re: [Poptop-server] GRE/tcflush problem
From:       James Cameron <james.cameron () hp ! com>
Date:       2008-11-26 0:23:07
Message-ID: 20081126002307.GD17825 () hp ! com
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On Tue, Nov 25, 2008 at 09:20:23PM +0200, xnetua@gmail.com wrote:
> I'm trying to set up poptop VPN at my Centos 5.2 server (2.6.18-92.el5
> #1 SMP, x86_64)
> There is no pptpd RPM for x86_64 so I've compiled it from source.

You could urge Fedora to package pptpd and then maybe it will appear in
the next version of Red Hat Enterprise Linux, and then maybe CentOS will
take it.

Or you could use something like Debian or Ubuntu who have already
packaged it.

> ppp was installed from Centos Base repo (ppp-2.4.4-1.el5)
> Oct 30 14:16:51 stekov pppd[2753]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so is for \
> pppd version 2.4.3, this is 2.4.4

You have failed to edit the plugins/patchlevel.h file to match the
version of pppd you are using.  Edit the file, rebuild pptpd, and try
again.  Alternatively, do not use the logwtmp plugin.

> Then I've removed ppp-2.4.4 and installed ppp-2.4.3 from source.

Heh.

> I'm able to start the connection now but it stucks at login/password
> check and then the connection is dropped.
> 
> Oct 30 19:19:18 stekov pppd[5129]: Using interface ppp0
> Oct 30 19:19:18 stekov pppd[5129]: Connect: ppp0 <--> /dev/pts/2
> Oct 30 19:19:48 stekov pppd[5129]: LCP: timeout sending Config-Requests

You are not getting GRE packets back.  Something is blocking them.

> Oct 30 19:19:48 stekov pppd[5129]: Connection terminated.
> Oct 30 19:19:48 stekov pppd[5129]: Using interface ppp0
> Oct 30 19:19:48 stekov pppd[5129]: Connect: ppp0 <--> /dev/pts/2
> Oct 30 19:19:48 stekov pppd[5129]: tcflush failed: Bad file descriptor
> Oct 30 19:19:48 stekov pppd[5129]: tcsetattr: Invalid argument (line 1001)

This is not relevant, it happens after the real failure, and has nothing
to do with it.

-- 
James Cameron                         http://quozl.netrek.org/
HP Open Source, Volunteer             http://opensource.hp.com/
PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/

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