[pptp-server] No connection...

[Nhan NGO DINH (OCIC Missionary Service)]

I'm currently working on a PPTP bridge over an internet connection with 
2.5sec of ping and 10-15% of packet loss.

The parameters are correct, since I've tried that type of connection before 
on a better internet connection and it worked, but now the PoPToP 1.0.0 
server reports:
===
Jul 28 05:26:52 rome pptpd[3789]: CTRL: Client 209.58.26.133 control 
connection started
Jul 28 05:26:53 rome pptpd[3789]: CTRL: Starting call (launching pppd, 
opening GRE)
Jul 28 05:26:53 rome pppd[3790]: pppd 2.3.11 started by root, uid 0
Jul 28 05:26:53 rome pppd[3790]: Using interface ppp0
Jul 28 05:26:53 rome pppd[3790]: Connect: ppp0 <--> /dev/ttyp0
Jul 28 05:27:23 rome pppd[3790]: LCP: timeout sending Config-Requests
Jul 28 05:27:23 rome pppd[3790]: Connection terminated.
Jul 28 05:27:23 rome pppd[3790]: Exit.
Jul 28 05:27:23 rome pptpd[3789]: GRE: read(fd=4,buffer=804d40c,len=8196) 
from PTY failed: status = -1 error = Input/output error
Jul 28 05:27:23 rome pptpd[3789]: CTRL: PTY read or GRE write failed 
(pty,gre)=(4,5)
Jul 28 05:27:23 rome pptpd[3789]: CTRL: Client 209.58.26.133 control 
connection finished
===

I've set up the client to retry for an hour and for an hour I've got the 
same log lines.

My options file is:
===
nodefaultroute
usehostname
noproxyarp
+chapms
mppe-40
auth
lock
===

Any idea?
What to do?
What is the reason of the timeout? The CHAPMS handshaking or the MPPE-40 
protocol?

Bye.

---
Nhan NGO DINH (OCIC Missionary Service Technical Support)
e-mail: missions at ocic.org
web site: http://www.ocic.org/missions/index1.html