PPTP in NetworkManager dont load ip_gre MPPE required kernel module.

When attempt to start a VPN with MPPE, it dont complete the process. Log before loading ip_gre:

Mar 27 13:40:42 scrat NetworkManager[1398]: <info> Starting VPN service 'pptp'...
Mar 27 13:40:42 scrat NetworkManager[1398]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 4210
Mar 27 13:40:42 scrat NetworkManager[1398]: <info> VPN service 'pptp' appeared; activating connections
Mar 27 13:40:42 scrat NetworkManager[1398]: <info> VPN plugin state changed: starting (3)
Mar 27 13:40:42 scrat NetworkManager[1398]: <info> VPN connection 'Comjota::Versa' (Connect) reply received.
Mar 27 13:40:42 scrat pppd[4214]: Plugin /usr/lib/pppd/2.4.5/nm-pptp-pppd-plugin.so loaded.
Mar 27 13:40:42 scrat pppd[4214]: pppd 2.4.5 started by root, uid 0
Mar 27 13:40:42 scrat pppd[4214]: Using interface ppp0
Mar 27 13:40:42 scrat pppd[4214]: Connect: ppp0 <--> /dev/pts/2
Mar 27 13:40:42 scrat pptp[4217]: nm-pptp-service-4210 log[main:pptp.c:314]: The synchronous pptp option is NOT activated
Mar 27 13:40:42 scrat NetworkManager[1398]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Mar 27 13:40:42 scrat NetworkManager[1398]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
Mar 27 13:40:42 scrat pptp[4232]: nm-pptp-service-4210 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'
Mar 27 13:40:42 scrat pptp[4232]: nm-pptp-service-4210 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply
Mar 27 13:40:42 scrat pptp[4232]: nm-pptp-service-4210 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established.
Mar 27 13:40:43 scrat pptp[4232]: nm-pptp-service-4210 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
Mar 27 13:40:43 scrat pptp[4232]: nm-pptp-service-4210 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.
Mar 27 13:40:43 scrat pptp[4232]: nm-pptp-service-4210 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 768).
Mar 27 13:40:46 scrat pppd[4214]: CHAP authentication succeeded
Mar 27 13:40:46 scrat kernel: [ 629.733299] PPP MPPE Compression module registered
Mar 27 13:40:49 scrat pppd[4214]: LCP terminated by peer (MPPE disabled)
Mar 27 13:40:50 scrat pptp[4232]: nm-pptp-service-4210 log[pptp_read_some:pptp_ctrl.c:544]: read returned zero, peer has closed
Mar 27 13:40:50 scrat pptp[4232]: nm-pptp-service-4210 log[callmgr_main:pptp_callmgr.c:258]: Closing connection (shutdown)
Mar 27 13:40:50 scrat pptp[4232]: nm-pptp-service-4210 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Mar 27 13:40:50 scrat pptp[4232]: nm-pptp-service-4210 log[pptp_read_some:pptp_ctrl.c:544]: read returned zero, peer has closed
Mar 27 13:40:50 scrat pptp[4232]: nm-pptp-service-4210 log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
Mar 27 13:40:50 scrat pppd[4214]: Modem hangup
Mar 27 13:40:50 scrat pppd[4214]: Connection terminated.
Mar 27 13:40:50 scrat avahi-daemon[1361]: Withdrawing workstation service for ppp0.
Mar 27 13:40:50 scrat NetworkManager[1398]: <warn> VPN plugin failed: 1
Mar 27 13:40:50 scrat NetworkManager[1398]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Mar 27 13:40:50 scrat pppd[4214]: Exit.

After loading ip_gre:

Mar 27 13:52:09 scrat NetworkManager[1398]: <info> Starting VPN service 'pptp'...
Mar 27 13:52:09 scrat NetworkManager[1398]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 5890
Mar 27 13:52:09 scrat NetworkManager[1398]: <info> VPN service 'pptp' appeared; activating connections
Mar 27 13:52:09 scrat NetworkManager[1398]: <info> VPN plugin state changed: init (1)
Mar 27 13:52:09 scrat NetworkManager[1398]: <info> VPN plugin state changed: starting (3)
Mar 27 13:52:09 scrat NetworkManager[1398]: <info> VPN connection 'Comjota::Versa' (Connect) reply received.
Mar 27 13:52:09 scrat pppd[5894]: Plugin /usr/lib/pppd/2.4.5/nm-pptp-pppd-plugin.so loaded.
Mar 27 13:52:09 scrat pppd[5894]: pppd 2.4.5 started by root, uid 0
Mar 27 13:52:09 scrat pppd[5894]: Using interface ppp0
Mar 27 13:52:09 scrat pppd[5894]: Connect: ppp0 <--> /dev/pts/3
Mar 27 13:52:09 scrat pptp[5899]: nm-pptp-service-5890 log[main:pptp.c:314]: The synchronous pptp option is NOT activated
Mar 27 13:52:09 scrat NetworkManager[1398]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Mar 27 13:52:09 scrat NetworkManager[1398]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown
configuration found.
Mar 27 13:52:09 scrat pptp[5912]: nm-pptp-service-5890 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-
Request'
Mar 27 13:52:09 scrat pptp[5912]: nm-pptp-service-5890 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply
Mar 27 13:52:09 scrat pptp[5912]: nm-pptp-service-5890 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established.
Mar 27 13:52:10 scrat pptp[5912]: nm-pptp-service-5890 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
Mar 27 13:52:10 scrat pptp[5912]: nm-pptp-service-5890 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.
Mar 27 13:52:10 scrat pptp[5912]: nm-pptp-service-5890 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 15
36).
Mar 27 13:52:10 scrat pppd[5894]: CHAP authentication succeeded
Mar 27 13:52:11 scrat pppd[5894]: MPPE 128-bit stateless compression enabled
Mar 27 13:52:17 scrat pppd[5894]: local IP address 192.168.0.241
Mar 27 13:52:17 scrat pppd[5894]: remote IP address 192.168.0.1
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> VPN connection 'Comjota::Versa' (IP Config Get) reply received.
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> VPN Gateway: <LOGEDITED>
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> Tunnel Device: ppp0
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> Internal IP4 Address: 192.168.0.241
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> Internal IP4 Prefix: 32
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> Internal IP4 Point-to-Point Address: 192.168.0.1
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> Maximum Segment Size (MSS): 0
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> Forbid Default Route: no
Mar 27 13:52:17 scrat NetworkManager[1398]: <info> DNS Domain: '(none)'
Mar 27 13:52:18 scrat dnsmasq[5794]: finalizado ao receber aviso SIGTERM
Mar 27 13:52:18 scrat NetworkManager[1398]: <info> DNS: starting dnsmasq...
Mar 27 13:52:18 scrat NetworkManager[1398]: <info> (ppp0): writing resolv.conf to /sbin/resolvconf
Mar 27 13:52:18 scrat dnsmasq[5937]: iniciado, versão 2.59 cache desabilitado
Mar 27 13:52:18 scrat dnsmasq[5937]: opções de tempo de compilação: IPv6 GNU-getopt DBus i18n DHCP TFTP conntrack IDN
Mar 27 13:52:18 scrat dnsmasq[5937]: usando nome de servidor <LOGEDITED>#53
Mar 27 13:52:18 scrat NetworkManager[1398]: <info> VPN connection 'Comjota::Versa' (IP Config Get) complete.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pptp-linux 1.7.2-6
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic 3.2.12
Uname: Linux 3.2.0-20-generic x86_64
ApportVersion: 1.95-0ubuntu1
Architecture: amd64
Date: Tue Mar 27 13:45:59 2012
ExecutablePath: /usr/sbin/pptp
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=pt_BR:pt:pt_PT:en
 TERM=linux
 PATH=(custom, no user)
 LANG=pt_BR.UTF-8
SourcePackage: pptp-linux
UpgradeStatus: No upgrade log present (probably fresh install)