PPTP na Ubuntu

S pomočjo pon (CLI orodje) se v Ubuntuju skušam povezati na PPTP server. Zadeva je stalno delala OK, možno pa je, da so kaj spreminjali v kernelu, saj se sedaj povezava ne vzpostavi.

Syslog pravi tole:

pppd[11264]: pppd 2.4.6 started by root, uid 0
pppd[11264]: Using interface ppp0
pppd[11264]: Connect: ppp0 <--> /dev/pts/6
pptp[11267]: anon log[main:pptp.c:314]: The synchronous pptp option is NOT activated
NetworkManager[985]: nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed
NetworkManager[985]: <info> (ppp0): new Generic device (driver: 'unknown' ifindex: 33)
NetworkManager[985]: <info> (ppp0): exported as /org/freedesktop/NetworkManager/Devices/30
NetworkManager[985]: <info> devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
NetworkManager[985]: <info> device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
systemd[1]: Started ifup for ppp0.
systemd[1]: Starting ifup for ppp0...
sh[11280]: Unknown interface ppp0
pptp[11286]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'
pptp[11286]: anon log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply
pptp[11286]: anon log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established.
pptp[11286]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
pptp[11286]: anon log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.
pptp[11286]: anon log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 514).

No, hec je, da če rečem ifconfig ppp0, dobim tole:

ppp0      Link encap:Point-to-Point Protocol  
          POINTOPOINT NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

Ampak nobena mašina za PPTP serverjem ni dosegljiva, poleg tega če rečem ifconfig, ppp0 vmesnik ni zlistan med vmesniki.

Kakšna ideja kaj se dogaja?

Kako to misliš? Znotraj Network Managerja mi PPTP povezava deluje brez težav.

Kernel imam 3.19.0-28-generic.

Module nf_nat_pptp, nf_conntrack_pptp ter nf_conntrack_proto_gre sem naložil (z modprobe), pa je še vedno isto.

Wtf... na en drug PPTP server se pa uspem povezat. Očitno je ona kišta nekako napol dol odletela...