[pptp-server] client sometimes unable to connect

[CELSE Frederic - GRE]

Hi,

until then we where using pptp server 1.0.0 with both linux and NT clients without
any problem (except the linux client encryption as submited yesterday). But now
some clients (trying connecting from Kenya) are sometimes unable to connect :

Jun 19 08:15:13 hades pptpd[4880]: CTRL: Client 212.49.90.254 control connection started
Jun 19 08:15:15 hades pptpd[4880]: CTRL: Starting call (launching pppd, opening GRE)
Jun 19 08:15:15 hades modprobe: can't locate module char-major-108
Jun 19 08:15:15 hades pppd[4881]: pppd 2.3.10 started by root, uid 0
Jun 19 08:15:15 hades pppd[4881]: Using interface ppp0
Jun 19 08:15:15 hades pppd[4881]: Connect: ppp0 <--> /dev/pts/1
Jun 19 08:15:45 hades pppd[4881]: LCP: timeout sending Config-Requests
Jun 19 08:15:45 hades pptpd[4880]: GRE: read(fd=4,buffer=804d7e0,len=8196) from PTY failed: status = -1 error = Erreur d'entrée/sortie
Jun 19 08:15:45 hades pptpd[4880]: CTRL: PTY read or GRE write failed (pty,gre)=(4,5)
Jun 19 08:15:45 hades pptpd[4880]: CTRL: Client 212.49.90.254 control connection finished
Jun 19 08:15:45 hades pppd[4881]: Connection terminated.
Jun 19 08:15:45 hades pppd[4881]: Exit.

Sometimes the same client connect in without any problem.

The only difference we can see between the good connections and the bad ones is that
it works fine when the client incomming IP address given by the kenyan provider can
be resolved with nslookup.

Does anyone know this problem ?

--
    ///
   (o o)
ooO_(_)_Ooo______________________________________________________________
|_____|_____|_____|_____|_____|_____|_____|____|_____|______|_____|_____|
Frederic CELSE                              Tel    : (+33) 4 76 41 67 34
Sema Group                                  Fax    : (+33) 4 76 41 47 47
Centre de Grenoble                          mailto:frederic.celse at sema.fr
-------------------------------------------------------------------------