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Funcionou perfeitamente no dia que segui o artigo. Após alguns dias, parou de funcionar, como posso debugar o problema? Recebo este log de msgs no cliente (/var/log/syslog):
Feb 28 09:45:13 MarcoSSD pppd[11241]: sent [LCP ConfReq id=0x8 <asyncmap 0x0> <magic 0x72d4c6a3> <pcomp> <accomp>]
Feb 28 09:45:37 MarcoSSD pppd[11241]: message repeated 8 times: [ sent [LCP ConfReq id=0x8 <asyncmap 0x0> <magic 0x72d4c6a3> <pcomp> <accomp>]]
Feb 28 09:45:40 MarcoSSD pppd[11449]: LCP: timeout sending Config-Requests
Feb 28 09:45:40 MarcoSSD pppd[11449]: Connection terminated.
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp1, iface: ppp1)
Feb 28 09:45:40 MarcoSSD pppd[11449]: Modem hangup
Feb 28 09:45:40 MarcoSSD pptp[11528]: anon warn[decaps_hdlc:pptp_gre.c:204]: short read (-1): Input/output error
Feb 28 09:45:40 MarcoSSD pptp[11528]: anon warn[decaps_hdlc:pptp_gre.c:216]: pppd may have shutdown, see pppd log
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[callmgr_main:pptp_callmgr.c:234]: Closing connection (unhandled)
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Feb 28 09:45:40 MarcoSSD pppd[11449]: Using interface ppp1
Feb 28 09:45:40 MarcoSSD pppd[11449]: Connect: ppp1 <--> /dev/pts/31
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp1, iface: ppp1)
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp1, iface: ppp1): no ifupdown configuration found.
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: <warn> /sys/devices/virtual/net/ppp1: couldn't determine device driver; ignoring...
Feb 28 09:45:40 MarcoSSD pptp[11565]: anon log[main:pptp.c:314]: The synchronous pptp option is NOT activated
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
Feb 28 09:45:40 MarcoSSD pppd[11241]: LCP: timeout sending Config-Requests
Feb 28 09:45:40 MarcoSSD pppd[11241]: Connection terminated.
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Feb 28 09:45:40 MarcoSSD pppd[11241]: Modem hangup
Feb 28 09:45:40 MarcoSSD pptp[11494]: anon warn[decaps_hdlc:pptp_gre.c:204]: short read (-1): Input/output error
Feb 28 09:45:40 MarcoSSD pptp[11494]: anon warn[decaps_hdlc:pptp_gre.c:216]: pppd may have shutdown, see pppd log
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[callmgr_main:pptp_callmgr.c:234]: Closing connection (unhandled)
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Feb 28 09:45:40 MarcoSSD pppd[11241]: using channel 90
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
Feb 28 09:45:40 MarcoSSD pppd[11241]: Using interface ppp0
Feb 28 09:45:40 MarcoSSD NetworkManager[908]: <warn> /sys/devices/virtual/net/ppp0: couldn't determine device driver; ignoring...
Feb 28 09:45:40 MarcoSSD pppd[11241]: Connect: ppp0 <--> /dev/pts/28
Feb 28 09:45:40 MarcoSSD pppd[11241]: Script pptp 34.253.192.178 --nolaunchpppd finished (pid 11493), status = 0x0
Feb 28 09:45:40 MarcoSSD pptp[11579]: anon log[main:pptp.c:314]: The synchronous pptp option is NOT activated
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[pptp_read_some:pptp_ctrl.c:544]: read returned zero, peer has closed
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[callmgr_main:pptp_callmgr.c:258]: Closing connection (shutdown)
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[callmgr_main:pptp_callmgr.c:258]: Closing connection (shutdown)
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[callmgr_main:pptp_callmgr.c:258]: Closing connection (shutdown)
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[pptp_read_some:pptp_ctrl.c:544]: read returned zero, peer has closed
Feb 28 09:45:40 MarcoSSD pptp[11521]: anon log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
Feb 28 09:45:40 MarcoSSD pptp[11521]: message repeated 2 times: [ anon log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)]
Feb 28 09:45:40 MarcoSSD pppd[11449]: Modem hangup
Feb 28 09:45:40 MarcoSSD pppd[11449]: Connection terminated.
Feb 28 09:45:40 MarcoSSD pppd[11543]: Modem hangup
Feb 28 09:45:40 MarcoSSD pppd[11543]: Connection terminated.
Feb 28 09:45:40 MarcoSSD pppd[11241]: Modem hangup
Feb 28 09:45:40 MarcoSSD pppd[11241]: Connection terminated.