[pptp-server] PTY read or GRE write failed

Sergio Dominguez sergio at omnitracs.com.mx
Wed Mar 15 12:36:20 CST 2000


Hello Fellow listers:

 I'm about to deploy my VPN. But before doing that I would like to
know a little details.

  Sometimes when I try to make a VPN connection, I get this
"PTY read or GRE write failed" error. If I try again the connection
is succesfully being made.

  Is it a common behavior?
  This is my pptpd.log file:


Mar 15 00:28:44 vpn pptpd[11140]: CTRL: Client 148.233.125.8 control
connection started
Mar 15 00:28:45 vpn pptpd[11140]: CTRL: Starting call (launching pppd,
opening GRE)
Mar 15 00:28:45 vpn kernel: CSLIP: code copyright 1989 Regents of the
University of California
Mar 15 00:28:45 vpn kernel: PPP: version 2.3.8 (demand dialling)
Mar 15 00:28:45 vpn kernel: PPP line discipline registered.
Mar 15 00:28:45 vpn kernel: registered device ppp0
Mar 15 00:28:45 vpn pppd[11141]: pppd 2.3.8 started by root, uid 0
Mar 15 00:28:45 vpn pppd[11141]: Using interface ppp0
Mar 15 00:28:45 vpn pppd[11141]: Connect: ppp0 <--> /dev/pts/1
Mar 15 00:29:15 vpn pppd[11141]: LCP: timeout sending Config-Requests
Mar 15 00:29:15 vpn pptpd[11140]: GRE:
read(fd=4,buffer=804d7e0,len=8196) from PTY failed: s
tatus = -1 error = Input/output error
Mar 15 00:29:15 vpn pptpd[11140]: CTRL: PTY read or GRE write failed
(pty,gre)=(4,5)
Mar 15 00:29:15 vpn pptpd[11140]: CTRL: Client 148.233.125.8 control
connection finished
Mar 15 00:29:15 vpn pppd[11141]: Connection terminated.
Mar 15 00:29:15 vpn pppd[11141]: Exit.
Mar 15 00:29:44 vpn pptpd[11145]: CTRL: Client 148.233.125.8 control
connection started
Mar 15 00:30:05 vpn pptpd[11145]: CTRL: Starting call (launching pppd,
opening GRE)
Mar 15 00:30:05 vpn pppd[11148]: pppd 2.3.8 started by root, uid 0
Mar 15 00:30:05 vpn pppd[11148]: Using interface ppp0
Mar 15 00:30:05 vpn pppd[11148]: Connect: ppp0 <--> /dev/pts/1
Mar 15 00:30:33 vpn kernel: PPP BSD Compression module registered
Mar 15 00:30:33 vpn kernel: PPP MPPE compression module registered
Mar 15 00:30:33 vpn kernel: PPP Deflate Compression module registered
Mar 15 00:30:33 vpn pppd[11148]: MSCHAP-v2 peer authentication succeeded
for usr2
Mar 15 00:30:34 vpn pppd[11148]: found interface eth0 for proxy arp
Mar 15 00:30:34 vpn pppd[11148]: local  IP address 172.23.1.65
Mar 15 00:30:34 vpn pppd[11148]: remote IP address 172.23.1.67
Mar 15 00:30:34 vpn pppd[11148]: MPPE 40 bit, stateless compression
enabled





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