Aug 10 14:18:06 centos0810 pptpd[3228]: CTRL: Client 117.00.111.22 control connection started Aug 10 14:18:06 centos0810 pptpd[3228]: CTRL: Starting call (launching pppd, opening GRE) Aug 10 14:18:06 centos0810 pppd[3229]: pppd 2.4.5 started by root, uid 0 Aug 10 14:18:06 centos0810 pppd[3229]: Using interface ppp0 Aug 10 14:18:06 centos0810 pppd[3229]: Connect: ppp0 <--> /dev/pts/0 Aug 10 14:18:09 centos0810 pptpd[3228]: CTRL: Ignored a SET LINK INFO packet with real ACCMs! Aug 10 14:18:36 centos0810 pppd[3229]: LCP: timeout sending Config-Requests Aug 10 14:18:36 centos0810 pppd[3229]: Connection terminated. Aug 10 14:18:36 centos0810 pppd[3229]: Modem hangup Aug 10 14:18:36 centos0810 pppd[3229]: Exit. Aug 10 14:18:36 centos0810 pptpd[3228]: GRE: read(fd=6,buffer=611860,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Aug 10 14:18:36 centos0810 pptpd[3228]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Aug 10 14:18:36 centos0810 pptpd[3228]: CTRL: Client 117.00.111.22 control connection finished